Spend time on any forum that talks about fly in trips or back wood excursions and the topic of a good portable sonar comes up
On our Root Bay trip this summer 3 of the members of our group had bought the Humminbird Helix 5 portables
Leveraging our experience that week and some of the guys experience using the units in their kayaks or personal boats I put up a review
https://www.northernjacks.com/post/product-review-humminbird-helix-5-gps-g2-portable
Thanks!
Andrew