permanent mount that looks like a sonar unit. (you could see kvds mounted on his bow during the espn coverage of the aoy race…and kvd is the e.f. hutton of fishing…if he says it works, people should listen). ive used the old style for a couple of years now, and am convinced they help the bite when schoolers go inactive on toledo bend. ive never really fooled around with the settings. just put it on one or two different sounds, and am convinced that they increase the fish activity in the area its being deployed. its really not that hard to use.Last edited by cajun catter on October 5th, 2009, 4:43 am, edited 1 time in total.