we are not college professors..AND BELIEVE IT OR NOT, this is actually a SERVICE INDUSTRY. Any instructor who seriously considers themselves as a actual equal to a college professor with perhaps A PHD has a serious self inflated ego problem.Most instructors get paid minimum wage, if they are lucky..some students require more effort and time than others and many instructors are mindful enough to go out of their way to see that the student succeeds. Why not give them a tip to show appreciation and thankyou..Don't be the diver who needs addiitional help with gear assembly, help during the additional dive ,help getting in and out of the water, don't be the diver who forgot to bring their mask and an instructor/divemaster loans you theirs, and then turn around and stiff them..You want to be cheap thats fine, just tell the dm's/instructor that you do not reward/tip for excellent care and see where that gets you. You will still get taken care of , but in a standard way. Do not expect favors of additional time if you are running behind in class or have problems with setting up your gear.Many cases instructors/dm's extend themselves and are not rewarded for the additional efforts. Right now as i write this I have an instructor who took a problem student of mine on her own into the pool while the rest of class is on a lunch break. Does she not deserve a tip as a token of appreciation?
I don't think anybody has tried to suggest that diving instructors are on par with professors - they are saying (and this is a view I agree with) when paying for training, the costs should be up front and anything paid as a 'little bit extra' is unethical in a situation where somebody is assessing your competence and deciding whether to award certification.
My local dive school uses part time instructors. On their books, they have a couple who both work in IT (one is a director of a software company and her husband is a senior designer for a multinational IT company) and the head if compliance and risk at a large university. Personally I have never needed additional tuition, but I have seen them on many occasions put in extra time to get somebody through the course. I have no idea what they are paid, but from looking at what the courses cost, it cannot be much more than minimum wage. When you factor in the extra time they spend with students, and the work they do in the background - I bet it isn't even that.
When I did my CCR course, my instructor was a full time diving instructor. He also runs dive trips etc. and does some commercial diving, but the point is his sole means of income is from diving. On the course enrolment forms, there was a comment clearly stating I was paying for training - not a certification, and if I did not meet the required standards the certification would be withheld and any additional training would have to be paid for.
Out of the two training providers, I am in no doubt the first lot do it more as a hobby. I very much doubt they need the money and I doubt they would even consider accepting a tip. The second is a full time diving professional and there is no ambiguity about cost - the price he states is the price you pay.
DMs at my local school are unpaid. I am not a DM, but I have helped out on numerous occasions - lifeguard cover at the pool, safety diver on courses, taking out new OW divers who need to build up their experience. I do not expect payment as I do not need the money. My weekday job pays the bills and funds my diving, but it is in my interest as a member of a club and diving community to get people interested in the sport. When they have built up the experience to be able to do the same, many do and everyone's a winner.
The trouble with the diver training industry is there are too many people prepared to work for nothing, but at the same time, too many people trying to cash in. I would prefer to see the community support itself by helping each other and passing on skills without obligation. However, there is a market for dive tourism and for those that want a crash course, and therefore a need for paid staff, but the guilt should not be passed onto customers if they are not charging enough for their services or working for an employer that does not pay them properly.