Interlux perfection with Interlux Intergrip..used it with good results and simple...I mix in or you can broadcast if you feel up to it.
After Christmas I am going to try kiwigrip on my next boat just for fun and will let my son go to town with the little notched trowel while I sit back and watch with a cold one
!!! He is pretty good with playing with thin set so hopefully he will get the hang of kiwigrip. Of course I will tape tape tape first...hell its just a boat!!!!