There is a lot of comment about the people but little about the aircraft, so, having flown the beast I offer my assessment of the Prentice.
A bigger apology for a flying machine it would be harder to find, ponderous, under powered, and barely suitable for flying from A to B in a straight line.
How it managed to get airborne towing a rope, let alone a banner on the end of it, is beyond my comprehension.
To sum up, it is a heap !
There, I feel better now I have got that off my chest