Okay, I looked at Strava and pulled some numbers about last Saturday's ride. I did this ride with [MENTION=384048]greg3rd48[/MENTION], so he may have a better sense of how long I was out of the saddle... but here's what I learned from Strava:
There were many steep climbs that took 3 minutes or less;
There were two steep climbs that took 7 minutes;
there were two steep climbs that took 21 minutes;
there was one steep climb that took 24 minutes.
I needed to be out of the saddle for most or all of the climbs mentioned.
Damn.
That's a lot of time out of the saddle. Long climbs I'm out more, but maybe 20% of the time at the most. Unless I'm gassed at the end of a ride, then a lot more sitting. But no matter what, every 10-15 minutes I got to get up to air out the junk for a minute or so.