A tower or pylon will give you little extra altitude, as will sack or heavy friends. Both help with landing new moves.
If you can afford a big $$$ wakeboard boat go for it as the wakes are so incredible. If you are like me and have an older but paid off boat, a new one is not the cards$$$ right now and you can put a little money into it to stretch it out another season or two then go for the new toyz.
Bill Bierbower www.MonsterTower.com
Wakeboard Towers and Accessories