Chris, You know I love to death
....
But I fall short of seeing the major gain here
You gave up 2 holders to gain 8. So you're at +6
You can easily put 4 tubes on your bait tank if you don't already have them there. So you're really +2 Much more compact and easier to reach
Your boat has 6 Horizontal rod holders...
I think you did a clean job, I just have a feeling a few trips with it and you're going to give it up.
Sorrrry