Whatever you do – go with a reel without the level wind!
I’ve dunked many conventional outfits and suffice to say, no reel was able to sustain the saltwater dunking. I’ve modified a few (with extra thick gug, consistent lubing) but with limited results. However, if you are willing to rinse it accordingly to every trip or so, your best bet would be the Abu non-levelwind models or the Newell 229-332. Those reels are underrated but treasured by those in the know.
“Crazy” Alberto
NonStopFisher@Optonline.net