I use 2 different liners in the boats I build. I use Rattleguard sprayin liner on the interior of the boats, this is a component system polyurethane/epoxy blend system with ground rubber that is sprayed using an undercoating gun. It dries to a rough hard finish, much like that of line-x or speedliner. Its pretty straightforward as far as the spray goes, there's a minimum of a 5hp compressor for spraying and can't be rolled. Also once mixed it begins to set in about 30-45 minutes depending on the ambient temperature. I've been very happy with it and have sprayed in at least 10 boats I've built plus 2 aluminum boats. It adheres extremely well to wood and epoxy.
Here's a shot of the floor in one of the boats I built...
One at night that I used to show the LED lights in action, it shows the texture a little better...
I've also started using another product for a non slip deck coating called Grizzly Grip. I would have used the Rattleguard, but mixing small batches of Rattleguard really isn't feasible. The Grizzly Grip is a single component that requires no hardener. It also has the ground rubber compound and dries to a finish much like Rhino Liner, a much more "squishy" rubber texture. I used it on the deck of the Hellcat last year as well as the 2 boats I just finished and have been pleased with it thus far. I will say that I used it on the DU raffle boat I built that was stored outside at my house for about 8 months and it began to fade. They sell a UV protectant but I would just paint it to match the boat, paint bonds to it extremely well especially if done with in a day or so of spraying. I also spray this using an undercoating gun but it can be rolled as well.
Here it is on the DU Duckhunter...
Here it is on the NFZ before painting...
And after painting...
Prior to my discovery of these two products I used Rustoleum's Road Warrior roll-on bedliner. It worked well and is what is in my original boat that is now almost 5 years old. It is still going strong much to my amazement and constant abuse.
Hope this helps.
Brad