On 18 Jan 2007 06:16:19 -0800, "Tony" wrote in
.com:

I had a friend who flew gliders and Mooneys, and when
he felt playful on a day with good thermals he's go to idle cutoff in
his M20 and pretend to be a glider for a half hour or so.

That works in a C-150 too. I used to do it over the Antelope
Valley/Mojave Desert in the early '70s. Thermal lift can be quite
strong there at times.