Hi crew, got my eye on a couple of low buck fish finders (really more concerned with reading depth "cleanly" up to 300' or so at 6-7 knots). What do you guys think of the following:
1. Humminbird Piranha Max 170 vs the 150? 170 has double the peak power, so thinking that will translate into better depth capability? This unit would be used in Hawaii to troll the 40 fathom ledge (6-7 knots).
2. Portable Lowrance/Eagle Cuda 300? This unit would be for Alaska (primarily Kenai river). Would figure that 800 watts peak power would be plenty for river depths?
Humminbird Piranha Max 160 portable? Same use. The Piranha just looks like a nicer that's easy to use.
Any help/opinions appreciated!
PS----those suction cup transducers; do they stay stuck on a aluminum hull while on step?
I guess one more question; only reason I'm thinking portable for the Kenai boat is that the battery we have for the 25 4 stroke yamaha is for starting only (no T/T or any other electric stuff on the boat). The battery is small (kinda like a ATV type, maybe bigger) but if it could run a small finder and occasional small bilge pump, I'd consider saving money on the finder and get the "regular", non-portable unit???