I had a bag made that is long and skinny that ties onto the trampoline just in front of the rear beam. Its long enough for kayak paddles and has a ton of room for everything else. I also had grommets put into my trampoline so I can tie the middle of the bag and avoid having strings that someone could get trapped in.

Up front, I had a large bag (a little larger than the size of a throwable) stitched into the top of the trampoline. I was really happy with this solution for distance racing.