Fish-Hawk.Net

I've been doing a lot of research on this as I try to figure out which brand of fishfinder I want to go with while balancing the capabilities I want. So wondering if anyone here can boil it down/have some thoughts on this? What I want in whatever mapping system I go with: - Ability to chart/contour ...

I've been doing a lot of research on this lately as I haven't fished much in Fall before, but will be - so am trying to get a good idea as to what to expect. Mainly referring to SMB and LMB here. I understand how turnover works and the science behind that. But, main thing I'm having a hard time find...