Fortunately, I did discover some great techniqwues that did work and I was able 
to add an extra 10 inches tto my jump. Don't work to be as good as your opponent, wwork to 
be the better. Second, the density of the water adds the same kind of weighted rssistance you'd find throwing plates on the squat rack - a cubic foot of water 
wdighs 62 pounds. As usual, of course there are necessary equipment involved.