if you have the x2 nozzle and haven't tried rigging a trim setup to adjust the nozzle up, your missing missing out on a lot. I have mine cranked up about 20 degrees and it really loosens up the ski and makes it a blast in the surf. I tried a trim lever but I think the static trim knob is more worthwhile.
i have a set of tapered spacers that go between the reduction nozzle and pump that i have been playing with.im not sure where to get them from though,they came with my mag pump.slightly down is working well for me and makes the ski turn really well although slightly less playfull.