I agree that there is no such thing as overkill in using a down rigger......I started off using a Cannon Mini-troll, then moved to a Scotty 1050...which is really good, and then finally, to my 12V electric Cannon Mini-Mag, I had saved when I sold my 18' Jetcraft in 2009.....Knowing the sale of the boat would not bring any more $$ with the down rigger, I removed it and was in storage until 2 years ago.
Since I down rig fish about 75% of the time at depths of 25' to 110', I became weary of hand cranking from depths while trying to reel in a nice fish......the electric down rigger is a god send to me.
I mounted the electric down rigger on my 2013 PA-14 and ended up reinforcing the black equipment mounting boards with 1/4 x 20 SS threaded rods, due to the flexing I observed while using the down rigger.
I power the electric down rigger with a 18 A/H, SLA that cost $50....it never runs short of energy and easily handles the 3 A DC load.
The following photos show the changes I went through for those who are interested in the 3 units.