I travel a fair amount on business, and when I was fairy young was told by a sales manager, "don't skimp on tipping, if they deserve it".
Last hunt I was on, I tipped a little over 20%, but that included housekeeping, cooks, and the guide, with the guide getting the lion's share.
I do a little better with the lady who cuts my hair, but she is fast, and good looking, so...
