A few months ago I ordered a set of Mares XR Tek Pocket Ultra Light Shorts from DGX Mares XR Tek Pocket Ultra Light Shorts. I've been meaning to dive with them, so I brought them with me to a shore dive yesterday. I put them and struggled with tightening the waistband. I made out, did a 2 hour dive, and all was good until I got out of the water. While walking up the beach, they started sagging down my butt. The only thing keep them on me was my crotch strap. There isn't much elasticity or stretch when tightening them up. For those who dive these shorts, what's your process for making sure they are on securely?