My experience- I worked on 2 Cruise ships and every Port was beach and sun. I always blue taped the front so I could change it every day after the fun. Never had a problem swimming or jet skiing. I use Ultrahold on the sides and back. When I am doing the beach or lots of swimming-diving I wear my poly side/back pieces. With UH they don´t move a millimeter. The lace front tape I change every day so it stays clean and fresh.

That´s just what i do -not the Gospel :-)