The best thing about gliding in RL is the winch launch, someone holding the wings level, the person with the lollipop take up slack and then overhead for all out. Hoping that the winch cable doesn't break and being prepared if it does and if all goes well at around a thousand feet and the sudden drop when you do release the cable and then then landing usually a hedge or high sided vehicle to avoid and a crosswind just to make things interesting.
This one the BM model from the package has enough power to self launch


off to download the jet powered Blanik L-13 TJ as self-sustainer from fsglider.de and give that a go in Fsx.