Question John,
I want to do this for tuna so my plan is to have it ready and when one fish hooks up put it down asap so see whats going on down there or put it down when passing visible surface schools to see if any come check out the gear. My concern is that the unit will not clear the bubbles from the front of the lens and that I would have to stop the boat, put the unit down and then get going to 6 kn which isnt going to work so well. Does the unit clear the bubbles in in the back currents in front of the lens quickly. Your thoughts?