What is the general concensus on the appropriate tipping amount for Divemasters? To make this a bit simpler, lets divide this into tipping for standard DM services (safety/site briefing, gear setup&breakdown, surface monotoring) and tipping for in-water/guide Divemasters. Should the tip be flat rate or percentage of the charter fee? Since there are a number of working DMs on the board I'm sure there are a variety of opinions that will vary from different areas. Let's assume you are happy with the DM and intend on tipping (not a cheap b@st@rd).