Most small pot pullers are designed to mount to downrigger pads the Scotty, Brutus Pacific pro and the Five Oceans pot puller to name a few. The main diffrence is that some will swing the boom around to the cockpit area and some like the Scotty you will have to reach out and lift the pot over the Grunwal.
The price of a small pot puller is between $500 and $1500 depending on choice.
I use the Scotty mounted to a Cannon pad using an adapter for the mount and electrical plug. I was just west of you last week crabbing the mouth of the Columbia river, the crabs were large and full of meat I brought a freezer full home a little over 80 something. The winter months are the best time of the year for grabbing but the weather is unpredictable we had small craft warnings 3 out of 4 days. The current rips, so be sure th weight your pots if you want to get them back, I use 10# bar-bell weights
Best of luck with your new boat Bob