We're trying to help but we need more info.
There are all kinds of rod holders out there and they're task specific. A rod holder for securing rods while underway and providing ease of access for bass fishing is very different from a rod holder for salmon fishing.
Here are a couple Google searches I did for rod holders.
https://www.google.com/search?q=199...h=418#tbm=isch&q=trolling+rod+holders&imgrc=_
https://www.google.com/search?q=rod...KEwivvO6e-frPAhUFPz4KHSb1BZEQ_AUIBygC#imgrc=_
Where are you fishing and what are you fishing for?
I got these pix from the 'net. Is your boat like this one?
The velcro style Rodsaver rod holders shown to the left of this seat are great for bass fishing. I had them on my Bass Tracker years ago. Nice to have multiple rods with different lures at the ready.
This guy looks like he's serious about trolling for crappie!