Christian's Great Interest - "Pray this Prayer"

Many contemporary evangelistic approaches end with a "pray this prayer" step for the sinner. What if the prayer looked like this?

'O Lord, I am a lost and fallen creature by nature, and by innumerable actual transgressions, which I do confess particularly before Thee this day: and although, being born within the visible church, I was from the womb in covenant with Thee, and had the same sealed to me in baptism; yet, for a long time, I have lived without God in the world, senseless and ignorant of my obligation by virtue of that covenant. Thou hast at length discovered to me, and impressed upon my heart, my miserable state in myself, and hast made manifest unto my heart the satisfying remedy. Thou hast provided by Christ Jesus, offering the same freely unto me, upon condition that I would accept of the same, and would close with Thee as my God in Christ, warranting and commanding me, upon my utmost peril, to accept of this offer, and to flee unto Christ Jesus; yea, to my apprehension, now Thou hast sovereignly determined my heart, and formed it for Christ Jesus, leading it out after Him in the offers of the gospel, causing me to approach unto the living God, to close so with Him and to acquiesce in His offer, without any known guile. And that I may come up to that establishment of spirit in this matter, which should be to my comfort, and the praise of Thy glorious grace; therefore, I am here this day to put that matter out of question by express words before Thee, according to Thy will. And now I, unworthy as I am, do declare, that I believe that Christ Jesus, who was slain at Jerusalem, was the Son of God, and the Saviour of the world. I do believe that record, that there is life eternal for men in Him, and in Him only. I do this day in my heart approve and acquiesce in that device of saving sinners by Him, and do intrust my soul unto Him. I do accept of reconciliation with God through Him, and do close with Thee as my God in Him. I choose Him in all that He is, and all that may follow Him, and do resign up myself, and what I am, or have, unto Thee; desiring to be divorced from everything hateful unto Thee, and that without exception, or reservation, or anything inconsistent within my knowledge, or any intended reversion. Here I give the hand to Thee, and do take all things about me witnesses, that I, whatever I be, or have hitherto been, do accept of God's offer of peace through Christ; and do make a sure covenant with Thee this day, never to be reversed, hoping that Thou wilt make all things forthcoming, both on Thy part and mine, seriously begging, as I desire to be saved, that my corruptions may be subdued, and my neck brought under Thy sweet yoke in all things, and my heart made cheerfully to acquiesce in whatsoever Thou dost unto me, or with me, in order to these ends. Now, glory be unto Thee, O Father, who devised such a salvation, and gave the Son to accomplish it: Glory be to Christ Jesus, who, at so dear a rate, did purchase the outletting of that love from the Father's bosom, and through whom alone this access is granted, and in whom I am reconciled unto God, and honorably united unto Him, and am no more an enemy or stranger: Glory to the Holy Ghost, who did alarm me when I was destroying myself, and who did not only convince me of my danger, but did also open my eyes to behold the remedy provided in Christ; yea, and did persuade and determine my wicked heart to fall in love with Christ, as the enriching treasure; and this day does teach me how to covenant with God, and how to appropriate to myself all the sure mercies of David, and blessings of Abraham, and to secure to myself the favour and friendship of God for ever. Now, with my soul, heart, head, and whole man, as I can, I do acquiesce in my choice this day, henceforth resolving not to be my own, but Thine; and that the care of whatsoever concerns me shall be on Thee, as my Head and Lord, protesting humbly, that failings on my part (against which I resolve, Thou knowest) shall not make void this covenant; for so hast Thou said, which I intend not to abuse, but so much the more to cleave close unto Thee, and I must have liberty to renew, ratify, and draw extracts of this transaction, as often as shall be needful. Now, I know Thy consent to this bargain stands recorded in Scripture, so that I need no new signification of it; and I, having accepted of Thy offer upon Thine own terms, will henceforth wait for what is good, and for Thy salvation in the end. As Thou art faithful, pardon what is amiss in my way of doing the thing, and accept me in my Lord Jesus Christ, in whom only I desire pardon. And in testimony hereof, I set to my seal that God is true, in declaring Him a competent Savior.' (pgs. 180-182 in the Banner of Truth Puritan Paperback, this excerpt taken from the CCEL site.)

Guthrie then says: Let people covenant with God in fewer or more words, as the Lord shall dispose them--for we intend no exact form of words for any person--only it were fitting that men should before the Lord acknowledge their lost state in themselves, and the relief that is by Christ; and that they do declare that they accept of the same as it is offered in the gospel, and do thankfully rest satisfied with it, intrusting themselves henceforth wholly unto God, to be saved in His way, for which they wait according to His faithfulness. If men would heartily and sincerely do this, it might, through the Lord's b1essing, help to establish them against many fears and jealousies; and they might date some good thing from this day and hour, which might prove comfortable unto them when they fall in the dark afterwards, and even when many failings do stare them in the face, perhaps at the hour of death--'These be the last words of David: although my house be not so with God, yet He has made with me an everlasting covenant, ordered in all things and sure; for this is all my salvation, and all my desire.' (2 Sam. 23: 5.) It is much if a man can appeal unto God, and say, Thou knowest there was a day and an hour when in such a place I did accept of peace through Christ, and did deliver up my heart to Thee, to write on it Thy whole law without exception; heaven and earth are witnesses of it--'Remember the word unto Thy servant, upon which Thou hast caused me to hope.' (Psa. 119: 49.)

Maybe praying in this way would result in less false converts.