ah yeah i did set a limit for the web build to keep things running smoothly (400...) - i will expose this in the settings so people can bump it up if they want!
it can be fiddly and not the most efficient (but is fun) but did you try shooting them at the trampolines with fans? you can make a funnel and direct them into the trampolines at the rough angle you want, the faster they hit the trampoline the further they bounce! would be hard to complete the required objective with this method but could be possible...