We used the Interphase unit extensively on our first big trip to Catalina and San Clemente Islands. My buddy on that trip was a dive boat charter captain and crewman for about 20 years. He was really pumped about the forward horizontal mode for finding submerged pillars and rocks not accurately plotted by charts, or even his own coordinates. The anchoring technique on the pillars is to cross over the highest point, drop the anchor on the other side, then back down, draping the chain across the top or nearby.
I liked the vertical forward mode in close to clearly establish the high point.
Great tool for our purposes. The more you use it the better you get. We also used it to find wreck debris with about 3' of profile in 100' of water. The key to that was moving slowly in a good search pattern.
Overall very high praise for what the unit can do. I, however, have earned about a C for mastering the functions and intrepretation of information.
Bob Cat
I liked the vertical forward mode in close to clearly establish the high point.
Great tool for our purposes. The more you use it the better you get. We also used it to find wreck debris with about 3' of profile in 100' of water. The key to that was moving slowly in a good search pattern.
Overall very high praise for what the unit can do. I, however, have earned about a C for mastering the functions and intrepretation of information.
Bob Cat