I suppose a lot depends on the type of fishing that you do.
In my case, we troll for Rockfish here in the Chesapeake, and these fish don't 'run' the way a tuna does.
Because of that, I installed a set of Lee Jr Wishbones on the side of my pilothouse.
The poles are a set of 19' polished heavy duty rigger poles that have been double rigged.
The wishbones were shimmed on the outside of the pilothouse to tuck the outriggers in as close as possible.
Custom stainless backing plates were used inside the cabin to make sure the installation was rock solid.
Some installation tips if you decide to go this route...
These are hand-built boats and the port and starboard sides are not an exact mirror image of each other.
Remove the graphics on the side because there is no way you can mount everything properly without drilling through the graphic.
Once you determine where to drill to mount the first wishbone, mount that one side first.
Then... take your measurements on the other side, but only drill a single hole at the bottom of the wishbone.
Put a single bolt in, then have a helper eyeball the rake of the poles.
When you have the two sides lined up, mark your holes for drilling and bolt her down.
Trust me... I had fiberglass to repair and I still didn't get it quite right.
Here are some photos that might help.
If you need anything more detailed, just ask. If I have the shots, I'll post them.