This duct tape water proof pouch is sealed by doubled zip-lock bags under a quick release snap. Webbing on the back side allows for attachment to your life vest. Window cleaner helps make it possible.
Quick release snap
Step 1: Set up
Find two zip lock bags in the size you want to use. I used 1 quart bags. Cut the bottom off of one of the bags. Place the intact bag into the bottomless bag. Adjust the bags so the zip locks are one above the other. The zip lock of the intact bag should be on bottom. See the pictures.
Spray your flat surface with window cleaner. Place the doubled bags on the wet surface and spray that as well. The window cleaner will give you some freedom in placing the tape. Don’t worry it will dry without effecting the performance of the tape.