A few thoughts from the Flyboard Community regarding this question:
1) Yes, but IBR system is non operational. Jet ski mode & FlyBoard mode work great!! However, IBR system (brake/reverse) will not work until ski is put back to stock.
2) Once the entire IBR system is removed from the ski the easiest thing to do is just pull the fuse out for the IBR system to disable it.
3) You can simply replace the bolts after you take off the IBR parts. The IBR actuator wil move but it does nothing of importance. You can use a quick nozzle to switch back to jetski mode without the brakes or nozzle trim. Just let off the gas sooner…