JOL/Gurney Straps

My gurney straps are starting to lose their velcro hold, had to swap them round as pulling up on my left foot now pulls apart the strap. Now skidding on the other side isn't an option.

They've lasted well though, daily use for 6 months.

I'm having exactly the same problem with my straps......and I've only had them about 2-3 weeks. Worrying to be honest, as they havent even been used every day during that time :(

Any ideas on a way to stop this from happening? :'(