Training for wakeboarding?

I will be wakeboarding for the first time this summer and want to be in good shape and be able to really learn it. I already snowboard so any training that snowboarders do would be helpful also. Any training tips would be helpful. I have a treadmill, an exercise bike, a small weight machine, a bosu ball, a yoga ball, and weights from two pound to ten pounds. I do not have access to a real gym. Thanks for the future help! ;)