I was looking at a two day axis hunt in Hawaii with no meals or lodging and the suggested tip was $350 a day, besides the cost of the hunt, I didn't book. I work as a mechanic and I sure as heck don't make $350 a day let alone ever get a tip for repairing someone's vehichle. So what it really boils down to is it's a lot of $
I went on a guided hunt and before the hunt an email was sent out. In the email was some "helpful tipping guidelines".
It basically said that if you were on a fully guided hunt you should tip 20%. If you were on a semi-guided hunt, you should still tip about 20%, because they are actually working harder on those than some fully guided hunts and you just don't see it. There were some other caveats which only involved the tip being at 20% or going even higher. All of it was basically saying to tip at least $250-$350 per day (when you looked at the percentages). Even in some instances when very little would be done by the guide.