I made one plea for everyone to refrain from a flame war. That does not make me a monitor. My request was in the interest of a reasonable poll.
My conclusions
This poll is for anyone who has ever taken a lesson with any SFP instructor. It lumps them all together. Comparing the responses to your particular numbers is probably not useful until there are many more responses. We need about 300 responses to have good population estimates that could be used for individual comparison.
This poll includes first time instructors with every other SPF instructor. There are statistical tests (such as the Z-Test) that could be used for comparing your set of 30 or so respondents assessed roughly three months later by a third party with the current poll. For those with a background in statistics this is a Likkert scale and you would need to use the same scaling procedure.
In the helping professions there is what is known as the hello – good bye effect. Essentially when you go to see someone and you have a problem, after they help you and you pay them money for the help you have a tendency to say that their “treatment” worked, especially if the person who provided the treatment is asking about their efforts. This is also known as the resolution of dissonance: there must be a reason I paid you money and it is best (for my own well being) to say that you helped. That is I can justify my time and expense by saying that you helped.
A poll that gathers evaluative information by an independent party at some time after the treatment can be expected to be more objective in that it is more likely to include those who, later, decide they were not pleased.
There is also the tendency for people who were not satisfied with their instruction to refrain from voting: If one can’t say something good, don’t say anything. In addition, many people are not sure if their dissatisfaction is their personal problem or the instructor's and the respondent does not want to in some way obstruct another’s work.
If anything, the poll is biased in terms of those who liked what they received. Given that perhaps thousands of people have taken lessons, at least that is what I have been told, the turn out is not too bad. Apparently 7 or 8 out of ten people who seek out SPF instructors are satisfied with their experience. It is reasonable to conclude (from this small study) that their customers are usually satified. Apparently, there is little deception in advertising or the satisfaction estimates would not be this high. This is, of course, a hypothesis for further testing. As it stands the poll leads to the idea that their work is well accepted by their customers regardless of the advertising methods.