C150 commuter,
What I meant was that a glider has a glide ratio that is 1.5 to 2.0 times that of an airplane;
For example, a C172R has a glide ratio of 9:1, where as a Schweizer model 2-33 has about a 23:1.
My point simply being before you consider turning back or worse commencing a 360(at low altitude), you should realize the aircraft's capabilities.
The article was by Barry Schiff, and I do not remember the month/year. I do remember one important thing that I teach as a rule of thumb;
1. He found on a relatively calm day you needed to be at a bare minimum of 600'AGL in order to successfully make a turn back.
In addition, the person who asked this question asked about a turn back from crosswind not upwind. If we are starting the normal turn from the upwind to the crosswind, then we should be at 700AGL (300 below pattern altitude when starting the crosswind turn; FAA Flight Training Manual). If I were established on crosswind, with a single runway, surrounded by woods, with relatively calm winds, I would turn back.
Point is Teach judgment before the maneuver, evaluate your options.
Fly Safe.