Sam

Take some aquaseal, 5200, liquid nails or some other kind of goo-ey sealant take glue the wrist strap to the back of the GPS unit.

This way the pin can go where-ever the hell it wants and it still stays on your wrist.

And fighting the GPS companies is all well and good - but you aint gonna be doing that during the race. Put the big GPS in a bag and not worry about whether or not you're going to have to deal with customer service on May 16th.