Whatever mount you decide on I HIGHLY suggest you consider some type of leash clipped to your BC. Wrist lanyards have a way of getting loose and coming off your wrist....a buddy lost a $500 setup last week because of a wrist lanyard. Also, if the GP is positively bouyant it is a really good idea to add some weight to make it at least slightly negative. That way if you do happen to drop it, it goes down where most people are looking, not floating to the surface where no one is watching....another problem my buddy learned about the hard way. Not to mention a floating anything is a PITA to deal with.