The one and only time I used a guide I offered a $40.00 tip and felt bad about it cause he was fabulous. He flat out refused the tip and said save it for your next trip I get tips from guys who make more money in a year then you will make in a lifetime. This is my passion and it was to much fun sharing it with someone who can appreciate that. I will tip him the next time I go. I tip based on my funds and service received.