Robow, I hate to be asking for professional advice on a forum (please no offense but you know how in the telephone game information is quickly distorted but treated as truth) but you sound like an optometrist. I never sleep in my contact lenses (save the few naps), but you think it would be safe to ride in contacts considering what others have said? I ride for 3.5 hour rides without trouble. Could your rinsing midday idea work with hard contacts? I would like to go back to gas perms because they are cheaper and actually hold the form of my eyes, but i disliked their effect drying effect at the end of the day. this was 6 years ago, though.