This is what is recommended by APD. You can get it from apdivingdirect.
TearAid Type B (Vinyl)
Product Code: TEARAIDB
TearAid Type B Repair Patch Kit
For use with: vinyl and vinyl-coated materials
TearAid's unique airtight, watertight, elastic composition stretches and recovers absorbing the force that causes ordinary repair products to be torn off. TearAid provides a watertight, puncture-resistant industrial-strength polyurethane patch
The elastic patch that won't pull-off when stretched
Kit contains: 3" x 12" Patch, assorted other patches, reinforcement filament, alcohol prep pads and instructions
