beach detection

Hey guys, a newbie here, and I've been looking at the Garrett Sea Hunter Mark II but I can't find any videos of anyone who seems to know how to use the discrimination adjustments for it. Does anyone have any experience using it that actually knows how to use the disc. knobs? I'm trying to find...

Hey guys, I'm looking at heading to Colombia South America for a few months and I am hoping to do some diving while there and I would like to get into metal detecting as a new hobby. Can anyone who has used a detector either at the beach or while diving give me your thoughts on the best units to...