One of my buddies got lucky last year, he was building a house, and was a foreman on the project, when the house was done, the owner came up, and asked him if he was interested in a .375 HH mag, he said he wasnt really in the market, couldnt spend the money.
The guy looks at him and says, you did a great job helping on this house, so this is yours. Gives him the rifle. Not a bad tip I would say.
I have worked in the service industry forever pretty much, heck I have a degree in hospitality management, so I am a real sticker when it comes to tipping. If you do a great job, I usually over tip (cause I have depended on tips so much) but if you are bad, I'm not going to tip you. If you bring me my food, or stuff, or do something for me that is run of the mill, you are going to get paid your wage from your boss for doing your job. If you actually add value to that transaction for me, I will pay you the value added.
In my home town, the fishing deckhands make out pretty darn well for themselves with tips. But the guys who work on the boats usually do their jobs well, make sure the clients arent doing any work, and dont stop moving and getting the job done while they are on the boat. Those are guys that will earn a tip from me, especially is they are working to keep my hook in the water.