hI Tim

Yes ,-there is an active network and evan championships for blind sailors .
They helm with a sighted person as crew .

Have not been involved directly at a regatta but have talked with several who have ,--very heartwarming -rewarding experiences always relayed for those involved ,--Know Lions Charitable organizations have been involved with it also .
here is a nice link to ones experiences
http://users.lanminds.com/fowlets/batsail.html

Also if you ever realy want to sharpen your sailing skills -sail sightless ,--it develops all other sences -feel hearing orientation .Its amazing ,-give it a try ,
You,ll also develop a sence of how couragous these sailors are,--the difference being ,- you can pull the blindfold down if in trouble .