OK, here goes:
Trial flying lessons are a major source of income for any flying school - even if they are marginal business, they can be substantial profit after the fixed costs have been paid.
Flying schools that rent out their aircraft so as pilots can undercut/take cash from their business are losing vital business. And if a flying school isn't making money on trial flying lessons, why is it doing them?
Interestingly, all three operators in Scotland are renting their aircraft from somewhere. Although it seems that the one renting from Tayside isn't anymore!
If anyone at the airfield I own decides to go down this route, I think we may be renegotiating the airfield lease and the hangarage terms and conditions.
Although........
Perhaps this will, instead, just become another way for flying schools to advertise trial flying lessons. Just like air b'n'b seems to be becoming just another way for traditional bed and breakfasts to advertise?