In my 2000 supra launch I usually ran, 550lbs under walk way, factory 400lbs, and I piggey backed the factory tank and had another 350 in the back locker. Then I usually put another 550 directly behind the engine and in front of the back seat.... When I was feeling really brave I would add 2 750s on each side of the engine also. In all honesty that was my favorite wake I have ever rode. Big, rampy, and very predictable....