I went out flying my Dream Flight Libelle again this evening. There were no thermals but my launch technique is improving, after watching countless videos. I've also been experimenting with adding speed flap on launch, about 1.5 mm of reflex on the ailerons gives you a much faster and steeper climb out.
At the top of the launch I'm trying to remember to level off quickly, before it reaches maximum height otherwise it stalls and you lose about 10' of height, and then flicking the switch to go from speed flap to normal. So on this evenings flights I was easily making an estimated 60' - 70'. Ok, that's nowhere near as high as the F3K guys go, but for a beginner flying an EPO DLG, that's not bad I think.
I've also added crow braking (on GLIDER set up, but you could set up Landing on an ACRO set up), which slows the plane down enough to be able to catch it easily but, if it is going to land on the ground, the plane adopts a nose down attitude, especially if you've set up elevator compensation. This has the effect of making the plane land nose first, so saving that delicate tail fin, (which I've already knocked off on mine).
So, the old adage of "practice makes perfect" is definitely true. Now all I have to do is find some thermals.