[Brian Krashpad]

I make my own home-made straplocks.

I cut a disk of plastic from those fake credit cards people send you in the mial, cut an X in the middle of the disk, then press it down over the end of the strap onto the strap pin.

Eventually these may beak but so long as you take a glance at them from time to time and replace as necessary, they're a lot safer than a strap alone.