Rod holder ?

[SkunkBoat]

0* corners is a problem because, while trolling, the line from the 30* will hit it if you don't have a bent butt rod in the 0*

The key is to have the tips of the rods such that while trolling AND when hooked up, the line from a forward rod doesn't tangle an aft rod tip.

the double rodholder does that by putting the rear rod lower than the forward rod. I would use this as pictured, both rods pointed aft. The forward rod on a long outrigger and the aft rod on the short rigger(assuming you have large outriggers. the riggers on my boat would not allow a long & short.). I would not point the double rodholder type outward while trolling.
The single outrodder type is made for that.(use a safety lanyard)

On our V20s you are going to be hard pressed to run 8 lines, especially without outriggers. The most I've run is 7 and it ain't easy, even when you're NOT catching fish.
I've run 5 without outriggers no problem but riggers make a better spread