If I have a good trip with a friendly guide I always leave a tip. Sometimes the fishing is just tough, so a hard working guide will earn a tip from me even if I get blanked. As for the eggs, I always let the guide have them. The eggs we used during the day came from another day, so it seems only right. The day a guide gets a lot of eggs has to cover for the days when he gets few if any. Plus every guide I have ever fished with cleaned and bagged the fish in order to get the eggs.
Just my .02
Tom