Thanks guys, I did end up with the terrova 80lbs.
I was under the impression the connection where the trolling motor plugs into the boat would need changing from 12v to 24v? unless its the same wiring and same plug? My bow has a plug for the trolling motor, which then goes underneath the bow where the batteries are stored.
Should add I bought the MKA 21 mount. It seems like there’s three different mounts you could use. 16, 21, or 32. From cheapest to expensive. BPS only had the 21.