My first flight in a Mooney was with a local CFI that I found in the Mooney Flyer list and in his plane. He was adamant that the plane was full stop only. It was also my first time in a complex plane and I was looking for him to eventually give me the endorsement.
I took that to heart and planned never to do TNGs after I got my plane. After all, my goal is for time building and full stop taxi backs build more logbook time without adding tach time.
But then during my commercial training, I was doing my 10 solo night towered landings at a class C airport that had plenty of traffic landing at the time. I asked for full stop taxi backs for all 10 landings but during my 4th or 5th, there was a controller change and I guess he wasn't told about my taxi back landings and only cleared me for a TNG. Not wanting to inconvenience him and given the 17kt headwinds, i figured I could easily just land at half flaps which is the same as takeoff setting on my plane. So i completed the last 6 landings as TNGs and felt rather comfortable doing them.
Just a few weeks ago, I got my HP endorsement in a V35 Bonanza and discovered the gear control and flap controls are very near each other and also hidden from my view behind the yoke crossbar. I could see TNGs in that plane being very risky for someone since it's so easy to accidentally raise the gear instead of flaps.