I used to have a Fishing/Transporter/BBQ set that was nice, but I deleted it from my Box (Memory thing for sets, w/e it's called). I found it to be terribly inefficent compared to the Hunting Fleet.
Plus, if you use the hunting fleet, they will bring stuff to trade with the Argosy, and you can troll other mobs for LR parts that are good for trading the trade lady online. You will also get stuff like Dash Extract, Pale Extract, and other useful stuffs, not to mention turn your farm faster.
IMO, fishing = useless.