I'm getting ready to do the Tybee 500 this May, and noticed that both sailors on the boat are required to carry an EPIRB with a strobe on their person. I'm hoping I can get some advice on which one to get, or what features to look for. I already know that I want a manual activation one, so that it doesn't accidently go off during a wet ride. Also these things aren't cheap, is it possible to rent them?