I have a 2016 Nitro Z-18. I recently made the switch to Garmin Echomaps. I have the new Echomap PLUS 93sv with G3 LakeVu. Up front I have the GT52 transducer. In the back, I have a GT30 transducer y-cabled in with a GT8 transducer. Today was my first test run. I lost depth reading at speeds 45-50 mph. My boat will do 62-64 mph. I'd like to get the depth on plane all the way through if possible but at least closer to 60 mph would be nice. I had the GT8 professionally installed. It's mounted correctedly in-hull. Are there any settings that will boost the performance of the GT8 so it will pick-up at higher speeds (such as increasing the gain or reducing the cone degrees)? Would swapping to a GT15 work better than a GT8--just in terms of keeping depth reading at high speed?
I don't care about performance of the 2D sonar as far as finding fish. I have the GT30 for that. I simply care about keeping a depth reading on plane while running. Did I waste money buying the y-cable and GT8?
Any help would be nice.