Hey Oz, give me some pointers about saltwater trolling motors - never had one - buy my new ride comes prewired for them - gonna hunt the shallow stuff and wanna sneak up on them tarpons and snooks!!!
I couldn't recommend it any higher...it's a Minn Kota 74 lb thrust 24 volt auto-pilot w/co-pilot...just after I got this one, MK upgraded to 80lbs of thrust...for a 20'er this is what you'll need for sure...friend of mine went cheap and tried to get away w/a 12 volt version... :...WEAK and his is onna 17'er...if you're gonna do this, plan on two group 31 batts DEDICATED to nothin' but the TM...AND an on-board charger to heat 'em back up after a hard day of chasin tail...fish-tail, that is!!!...Installed a Guest 2620 in 1999...FLAWLESS...plug in and FORGET about it til you're ready to go...
Franco, don't know if your Mckee came with trim tabs, but if not this is the way to go, though pricey. The steigercraft 21' superfly comes with these standard.