Since I am not one of those coolkids playing with Minecraft 0.11 betas, I figured I could make my own boat implementation using PocketMine 1.4.
It was just a test... I just wanted to know if it could be done... I probably will just shelve it until MCPE0.11 goes out of beta.
Doesn't work very well, on Android it would crash the client. On iOS it would work but the player needs to be flying (otherwise they fall through the boat ) Anyway, the idea was not so much of a boat but to move block models. It is in my github bad-plugins repo. Since it was just a test there are no docs. If you can't figure it out on your own you shouldn't be messing with it. There is a file called "model.pmc" which is the little boat. You can create the pmc file using my hacked WorldEditor. (Copy/Cut to clipboard and //save file to save the clipboard). There are four functions of interest: loadmodel - loads the model.pmc file W_render - places the model W_remove - removes the model W_move - moves the model Note that a lot of the code in there is just from a template, so it is not used.
Interested in our Vehicles plugin? https://github.com/LegendOfMCPE/Vehicles BTW you can try using packets for minecarts meanwhile.