The adhesive that I used to hold the two pieces of my seat together, and Velcrove stops to the foam seat is failing. What is the the best adhesive recommended for this purpose. 
I am getting ready to add custom padding to my cockpit, and I would like to make use of Velcro to hold it in place, if I can count on it staying in place when needed.

I just returned from a weekend paddling in currents, and I was being tossed around a lot.

extra padding was suggested, so that my Chesapeake 17 would fit my lower body like a glove. 

Any suggestions would be appreciated.

Thanks

Wayne