I've been having some elbow pain since I stared riding a few weeks ago. I don't notice it so much when I'm riding but its obvious as soon as I get off the bike and hurts the worst when I straighten my arms. I thought I had been keeping myself from locking my elbows straight when riding, but I paid really close attention to it yesterday and noticed that my elbows are *almost* locked straight most of the time. I consciously kept my elbows bent for a portion of the ride and felt much more comfortable except that my biceps/triceps were getting a little sore.
If having my elbows locked out is 180 degrees, then I would say I was trying to keep them at about 150 yesterday when riding on the hoods. What angle works for you?