3M makes a product that's a step above velcro, I just looked for my extra roll, but can not find it, but it is amazing stuff...something like quick lock or something... i use it for lots of things, incredible holding power...I'm sure someone will chime in and give us the brand name...it's pricey, but works very well.
Now I have to figure out what I did with it... boy it stinks forgetting where you put stuff from one season to another.
It is amazing though, incredible holding power!
EDIT: Just found it, "dual lock" is what it is called, by 3M... we use it with our mobile studios to hold sound boards, equipment, also to firmly mount our gps/tv's, etc in our cars and boat.