On Friday, 12 March 2021 at 10:33:06 UTC, wrote:
While it may be the case that a volunteer/club model keeps costs low while gliding continues to use 1950's infrastructure and methods, this will not necessarily be the case if/when we begin to adopt alternative technologies at scale.

For a typical winch launch you need as a minimum:
1. A wing runner
2. A signaller
3. A winch driver
4. A recovery driver to fetch the glider when it lands and bring it back to the launch point

None of these are required for self-launching.
Furthermore, turnaround time will be faster with a powered glider in part because it can taxi under its own power.

We need to adopt self-launching with slot booking, as power has been doing since the beginning.

Gliding isn't in decline because it's becoming too expensive. It is in decline because it does not cater to the needs and expectations of modern society. I will say again: fewer people these days are willing to stand around on an airfield for an entire day for perhaps 20 mins in the air.
That's the problem...

People have a range of interests and what they do in gliding, instructing, tugs, local soaring, decent cross countries, and you still haven't really elaborated on why you think this 20 minute flight might be a big ambition for a significant proportion. OK for you if that's what you want, but even some early solos still hope they might get an hour and a bit.

Nobody is stopping you doing this for yourself. Several clubs have some self-launching gliders. If you turn up on the potential best day of the year, and there's a queue of 100+ gliders waiting for the first wispy cu to appear before they all go, some on badge or tecord attempts, nobody will object to you going to the front and do your flight first. If launching is already in progress when you turn up, take your place in the queue, or it might fit in ok to let you go from alongside

Even if a club had 100 gliders that are all self-launching you might still have queue issues if you want to be there only an hour predefined by your booking several days earlier, compared to the people rigging at 8 am on a 750 km day. Note that the keen local soarers and trainees in two seaters aren't excluded on those days, they get their flights too.

On less busy days, it wont be a problem for you. But believe it or not, and perhaps you won't, even from early on, more people want to fly on the nice days. Your suggestions don't seem to take much account of that variability of demand.