I've been to resorts and fishing lodges before that provide guiding service for a fee.  In that situation, I have always tipped as the guides were employees of the lodge.  In Wisconsin, I see a lot of independent/private guides who have their own business.  If anyone has used this type of service before, is it customary to tip on top of their fee, or because they are private and not being paid by an employer, is the tip assumed as part of the fee?  Thanks!