DB-6...what is your aim in instructing?To let the students' abilities(or lack of) dictate the whole circuit pattern?To make the feel like Kings so they will come back and spend more money...when in fact they are not learning anything because you are "babying" them?
And at what stage do you stop letting them do wider circuits?.....CPL????ATPL???
In a busy circuit they will stuff it up for everyone.At remote airports...if they call "tuning base" 5 mile out...then they could cost a Regional Airline hundreds of dollars in extra flying...just because you(and others like you) can not teach proper circuits!!!
And how will the poor student feel later on when he is failed on a test because his circuits were too wide!!!
If you are not going to teach it properly....don't teach at all!!!