Is this what inspired you at 0:31 ?
I was thinking about cutting it out but was too lazy in the end. I couldn't steal another vehicle because the Sanchez would vanish.
I may be able to use the other method. I have completed 9mm Mayhem and it doesn't seem to add mission attempts when I replay it and waste the Freeway driver.
Edit: I'm not entirely sure how to move the bike whilst it is in the boat. It either falls out or takes too much damage and blows up. Perhaps I can try and get another one from 9mmM and try to jack the Yardie from the bike and it convert it into DP form. I am also not sure how you would collect the package from falling as you fall from the left of the bike and the package is on the right.
Funny thing: the Dp bike doesn't blow up but it is extremely hard to get it in the right position. The best thing you can do is push the boat with the bike.