Was just busting his balls Bubba, I don't get to mess with people too often. That is until some one with the name that starts with E and ends in H posts then I get to have a field day.
Either one of the mentioned double sided tapes will work well with no damage to the helmet or mounting device I have used all three methods and they work quite well, just let it set up for 24hrs for full adhesion.
What I use then I need to remount my GoPro mounts http://mounting.scotchbrand.com/wps/portal/3M/en_US/ScotchMountingAndFastening/Home/Products/Mounting/Extreme/
I WILL be there this year along with my video equipment. Wife has been told in advance so she can't stop me, only mother nature can and even then I have Frogg Troggs lol.