So buy a flapped ship and lock the flaps in neutral (not really, just think of the as fixed). Fly thermals 5 knots faster, cruise with less efficiency, land with slightly less control,

Then just once sneak the flaps down in a thermal and notice how nice it is. Put them negative above 75 knots, gee it goes better. All the way down landing, much better control. After a few repetitions you wonder why you even worried about it

Bruce Patton
Old HP-18 driver