I've had a lot of conversations like this on the river. On the river, I wear monofocal glasses with a flexible titanium frame. We haven't gotten to the mono- vs. bi- yet, have we? Well, at the first clinic I made the mistake of wearing my bifocals (old eyes), and as a result, portaging (to re-run Nemo) was a nightmare. Of course, contact-wearers don't have to concern themselves, since they can leave the reading glasses in the truck (or have them hang from the pfd while styling rapids

). Anyway, it always seems to come down to dealing with astigmatism or foggy glasses, and so far the argument hasn't been definitive enough to make me want to poke my eyes (alright, I am a bit squeamish). Hanley recommended going to an autopart store and getting anti-fog wipes, and that helped some. Failing or forgetting that, I'll lay on a good coating of saliva. Of course, another way to deal with fog on the glasses is to wash them in the river as follows: flip your boat over, bring your paddle blade parallel to the water surface, and snap the hips. Okay, that really doesn't help much for the glasses, but is definitely recommended on a regular basis nonetheless.
Chris S.
Chris Schardl