So I have been looking around and reading everything there is. I use gen 3s 9 inch and 7 inch.
I ran across these 2 Raymarine 1k transducers at 300 bucks each used can be adapted for Lowrance.
B175H 6 to 10 angle and B175L 21 to 32 beam angle. I am also looking at the B75s in M or H, probably M...