Up here in Canada land the law requires 50 feet of dry heaving line which is the yellow floating poly rope. I just follow the regs on this one and keep what is required in my ski. If you're riding a SJ you can fit that much rope, plus the light device, plus the sound device, plus your paperwork inside that little container on the top of the hood. I also keep some glow sticks in there because the flashlights that come in the safety kits are junk and never live past 2 months of ride time. For lowered hoods and aftermarket skis I have no info or suggestions for storage. But it goes a long way with the water police when they want to see your kit and you have it all. I've never been stopped by them but have chatted with them on shore many times. It gives good relations to them, helps us keep a good image with them and they actually love watching us up here, gives them something fun and positive to see in an otherwise not so positive job.