On my last dive, which was a drift dive on the Rainbow River in Florida with a max depth of 25', my new Peregrine computer logged the dive as about 20 separate dives. Every time that I can to the surface, the dive basically ended and restarted once I went deeper. I am sure it's a setting in the computer but I can't figure out how to change it so that a shallow drift dive logs as one dive. Any suggestions?