Hi Ruth,
Thanks for writing. I will try to give you a little help here.
a] First, what kind of roll are you trying to do?
www.exchile.com/KayakSchoolRollIdentifier.htm
Generally for people with stiff backs we prefer to teach the Twist snd Slice roll as is involves less motion of the spine. However, with a fused vertebrae you should pick the kind of roll that causes the least potential for discomfort.
b] From your description: \"I can get about halfway up but not enough to stop the boat falling back upside down - \" it usually indicates a neglect of your initial body position. The result is running out of kinetic motion before the roll is executed. You need to move your mind from a Paddle, Arm, Hand centric thinking to BODY centric thinking. The roll has nothing to do with hands, paddle and arms, but ALL to do with the BODY. Any other way of thinking will delay your progress.
See:
All kayak rolls are initiated from the SIDE of the kayak. This is not apparent when you are focusing on the Hands, Arms and Paddle Blade. Where your torso is positioned at the beginning of the motion is CRITICAL. All rolls involve winding up the torso and then unwinding the torso. If you are dangling underneath the kayak with perfect paddle, hands and arm placement you will only get halfway up. The next time you go to the pool think about bringing your body up and to the side before beginning the roll -(you should feel a lot more power then).
c] If you can get a person to videotape your roll and post it to YouTube or another video hosting site we will be better able to help you, we have done this many times in the past. However, as another poster noted, getting a good instructor is always the fastest and best option.
Let us know your progress and how it all works out.
Regards,
Chris Spelius
www.kayakchile.com