I always decide in the individual. If they give crap service they don't get much or anything. You will know what right. Just rennet a lot of guides make their money from tips. Especially the ones who don't own the place. Tip how you would want to be tipped. Say he is with you for 3 days. Does all the gutting skinning and quartering. 100 bucks doesn't work out to much hourly! Or daily. Pretty sure you will know what's right. Lots of diff circumstances involved.
It's not how you fall, It's how you get up.