John,

I agree with mike. With fillets and a complete layer of glass you don't really need an extra layer of tape on the seams.

Have you tried rolling while just holding the paddlefloat in your hands? It might help to eliminate the paddle at first.

These are some key points that I think help with rolling:
1. Keep your head low. I don't lie back, I tuck forward, but the concept is the same. Keep your head as close to the kayak as possible and it will make rolling a whole lot easier.
2. A good setup; getting the paddle in the right position before the sweep really makes a difference.
3. I think it's essential to be comfortable under water. If you're anxious, learning how to roll could be a nightmare. If you're not totally comfortable hanging upside down in your kayak, practice it. My comfort and confidence in/under water enabled me to teach myself to roll wihtout lessons.
4. Extend that paddle! Don't let anyone tell you that rolling with an extended paddle is "not a proper roll." If you can get back up consistently without hurting your shoulders, it's a good roll.
5. Try using a dive mask or goggles/noseclips. Rolling a kayak is not exactly an intuitive action, it helps to see the surface of the water and how your paddle is oriented to it. Also, you'll be able to stay underwater longer (and more comfortably) if you don't have water seeping into your inverted nose.

Good luck,

Pedro Almeida