I just ordered the Vibra-tech 730 also, and a pair of water proof headphones for my Garrett AT Pro. I figure the 730 will be great for just snorkeling around close to shore, will even work as a great pin pointer for the AT Pro in water so I think I should be all set! I just hope they get here by July 3rd, as promised by Amazon.
Can't wait! Being in Oregon, the hot weather could go away by the time they get here and it will be too cold again to go in the water!
Edit: I just noticed in previous post that the vibratech 730 wont see gold!? That isn't good! I'll try it out on that right out of the box and if it wont then I may just return it. I was under the impression from another post I read on another topic and thought the guy found gold rings. Will see.