I hate rollercoasters so that will never be a problem for me. But as Sam and some others mentioned. If you are using good equiptment, that gun should not be going any place. My iwb stuff is all Mitch Rosen, Galco, De Santis, all with strap thumb breaks. Thos are the safest way IMO to carry, or the same type in an IWB holster. My new CCW Breakaway pants solved a lot of problems with carry. I keep mentioning them because they are so great I want you guys to try a pair. The price is less than a decent holster, and you have two holsters built in, plus two secure pockets in the cargo models, and two rear pockets. The front are lined with a rubber material with velcro to adjust the depth and clearence of the weapon. And when you want it out, you twist your hand and two snaps allow the side of the pant leg, to break away thus allowing the gun to come straight out. It sit's way down as far as you desire to set the velcro. You can have it down to your knee.I had a glock 30 and a steel emp 40 in the front pockets, Just to see if they printed. My wife said I see nothing. So there you go, Just get a good belt to hold up 4 lbs of guns Lol