Nutty 1.....I am right handed too and like the down rigger and rod mounted on the L/H side for trolling.
My Humminbird 768 fish finder/GPS is mounted to the right black board via a 1" ball, Ram mount and base designed for Humminbirds.
A second Scotty flush mount rod holder is on this side too.
I mounted my Scotty 1050 straight onto the black board and the rod holder using a Scotty flush mount.
I also braced the down rigger to the inside vertical wall of the PA-14 with two SS straps and 10-32 hardware + fender washers used inside and outside the hull to spread the torque/load.
The two mounting screws closest to the outside of the hull were mounted from the bottom/underside of the black board with flat head screws.....remove the black board first.....the white line is a safety leash.
I added a SS "hook" to the arm using a SS radiator clamp so I could hook the lead weight on the arm for convenience and get it out of the water.
The only other thing I discovered, after using the 1050 for the first time was "safely" reaching the cable at the end of the 23" arm...initially, I used the "T" handle on the paddle. .....
The final solution was using a 1/8" thick x 36" long wire, I fashioned a "J" hook on one end and a 1" finger ring on the other end....this worked well as I sat in the seat and snagged the cable for attaching my line to the clip.....I slipped 4 used wine corks on the wire so it would float.....just in case it went into the drink.
These photo's will give you and idea of what I did.