Driftmasters will have all your needs... Every type of rod holder and mounting setup imaginable....
http://www.driftmaster.com/
http://www.monkscrappie.com/
Just bought a deck boat last week. Though billed as a fishing version, it is real light on rod holders, like non-existent. I mounted 6 vertical holders on the back wall for general use when running, but I need to get some around the perimeter of the boat for actual fishing use. This boat will see a lot of drift fishing for catfish. The only stipulation is that the holders need to be removeable without tools, per the wife, for leisure and booze cruising. I can't find any readily available in days of searching.
Driftmasters will have all your needs... Every type of rod holder and mounting setup imaginable....
http://www.driftmaster.com/
http://www.monkscrappie.com/
Driftmaster's Pro Staff
Look at the bottom of this page and this is what I use. It's for mounting to your seat pedestal.
Bee Ready Rod holders - Bee Readys
Driftmaster round rail clamps are the way to go. They are sturdy and easy to remove and require no holes to be drilled. They also allow you to adjust rod tips up and down easily. I would recommend that you use the 1/2" stem rod holders for larger rods used for catfish. You will need to know what size of rail you have on your boat. To determine this, take a 7/8" open end wrench and try to slide it on the rail. If it fits you have 7/8" rails and if it does not, then you have 1" rail. You can see both models on my website www.ExtemeFishingConcepts.com If you have further questions, contact us at 336-249-6782.
The Driftmaster rail mounts are easy to put on and take off pretty quickly. I use them on my t-bar setups and have no complaints.