Peeling Plywood Problems

I bought a 90% finished TD last year which the owner had built the year before. He was a carpenter by trade and did a very nice job building it. He painted the top and front with "Duralite White Elastmeric Roof Coating" and told me it would last a very long time and I wouldn't even have to cover the TD during the winter. Believing those two comments were my first two mistakes!
Now that the winter rains are over here in California, I decided it was time to do some work on it before taking it out. The other day I noticed sections of the roof looked like the wood is peeling up. But if he painted the top with roofing paint and used waterproof plywood (?)... how could that be?
In any case, it now needs fixing. I showed a couple of pictures to someone at a local boating store and was told to, "Rip the roof off and start over again with waterproof plywood." I'm fairly handy with woodworking, but I don't know if I'm ready to tackle rebuilding my teardrops roof.
I'm hoping to keep what I've got and repair the damage, if that's possible. My first thought was to fill all the gaps with something (epoxy maybe?) where the wood is peeling up. When it's dry, sand down all the high spots and then put some kind of protective coating on it and finally a good quality paint over that. Does that sound logical?
Another option I just thought of would be to some kind of skin over the whole thing. The only problem is weight. My TD already weighs 1,000 pounds empty and I only have a 4 cylinder pick-up truck to pull it with, so adding an additional item to the roof is a lot of additional weight.
I don't have garage space to put my TD in, but I will be covering it somehow in the future to hopefully prevent this from happening again.
Thanks in advance.
Don
PS - Because of the shadows, the pics look worse then they really are.

Now that the winter rains are over here in California, I decided it was time to do some work on it before taking it out. The other day I noticed sections of the roof looked like the wood is peeling up. But if he painted the top with roofing paint and used waterproof plywood (?)... how could that be?
In any case, it now needs fixing. I showed a couple of pictures to someone at a local boating store and was told to, "Rip the roof off and start over again with waterproof plywood." I'm fairly handy with woodworking, but I don't know if I'm ready to tackle rebuilding my teardrops roof.
I'm hoping to keep what I've got and repair the damage, if that's possible. My first thought was to fill all the gaps with something (epoxy maybe?) where the wood is peeling up. When it's dry, sand down all the high spots and then put some kind of protective coating on it and finally a good quality paint over that. Does that sound logical?
Another option I just thought of would be to some kind of skin over the whole thing. The only problem is weight. My TD already weighs 1,000 pounds empty and I only have a 4 cylinder pick-up truck to pull it with, so adding an additional item to the roof is a lot of additional weight.
I don't have garage space to put my TD in, but I will be covering it somehow in the future to hopefully prevent this from happening again.
Thanks in advance.
Don
PS - Because of the shadows, the pics look worse then they really are.