I'm not sure this is truly "DIY", it's more a simple trick to stop trim pockets from sliding about on your harness, belt or cam bands between dives. Useful if you don't want to splash cash on the fancy trim pockets with sewn in keepers.
1. Cut a section of 50mm bicycle inner tube ±5mm (±1/4") wide. Not too wide !
2. Thread the harness / cam belt through the inner tube, followed by the trim pocket.
3. Position the inner tube and trim pocket where you want it. Then slide the end of the harness / cam belt back through the inner tube.
4. Pull the harness / cam belt tight so the inner tube is stretched tight around the trim pocket belt loop.
5. Done !
1. Cut a section of 50mm bicycle inner tube ±5mm (±1/4") wide. Not too wide !
2. Thread the harness / cam belt through the inner tube, followed by the trim pocket.
3. Position the inner tube and trim pocket where you want it. Then slide the end of the harness / cam belt back through the inner tube.
4. Pull the harness / cam belt tight so the inner tube is stretched tight around the trim pocket belt loop.
5. Done !