I guess "Sit down and shut up." is a bit blunt.
Well... I have to be able to move the stick to full lateral, don't I?
Actually
I endorse Paul's briefing 100%, with the extension that I do go a bit
into the safety issues. Ie, I inform the passenger that:
Should
I have a problem while the aircraft is still on the ground, I will stop
straight ahead, and they should be ready to unbuckle, exit, and move
away from the aircraft if requested.
After take-off, and until we get to 400 feet, in the event of a severe problem I shall land (nearly) straight ahead and they should "cover up" if I warn them to do so.
After 400 feet, in the event of any severe problem, I shall return to the field or to the safest landing area I can access.
I then stress the extreme unlikeliness of any such problems, but reassure the passenger that it is better to "be prepared".
Interestingly,
my passengers have all appreciated the frank approach, rather than any
false bravado. And I have no shortage of requests for repeat trips.
Gregg