No doubt about pulling the boat, how about stopping it? I'm sure its a staged vid, as nobody would take that out on the road and expect it to perform reasonably safely.. this based on the braking and weight differentials..
Either all that, or someone just "had" to look so freaking cool... and flashy... with all the yellow dollars signs on the boat and trike... ha.. If thats the case, the guy is full of himself... I say its a staged video though... for someones strange reasons..
I would definately believe a much lighter fishing/sport boat would work... not the monster in the vid though.