[DonV]

I used the 20 degree B164 with the Raymarine DSM300 1000w system. VERY nice, so far no problems reaching bottom to 924' (the deepest I have noticed) trolling and no problems while underway. Installed on the starboard side about 6" to 8" in front of the live well. Actually used the same hole location where the raw water pick up was and moved the pick up to the port side. Works great, I highly recommend. I also had a very positive experience with Airmar customer support replacing my original unit due to a funny indentation on the transducer cord, the cable manufacture's defect. Full new replacement no questions!!!