Bought a used odc 420 couple weeks ago finally finished building the rod holder system.
Big shout out to Sapdawg's tutorial and Thisfool's advice
So here it is

I did it mostly like Arron's design except the rod holders, instead of having them fixed, I made em adjustable to forward,backward and straight up.

Here's a pic of the back

Cant wait to take it out to the Pudd this saturday.

ZBao