a good practice for anything new is to land on the invisible runway at 1500 agl first I know it's not the same as seeing the ground come up ..but practicing anything new at altitude aclimates you to the airplanes characteristics before your at the committed stage of an actual landing. get a feel for the sink rate change from slip config to flap ,..the trick is to figure out where the "Burp" is on your flap position,.once you know where it is after coming out of slip..to flat and applying flaps ... you set the flap to just before the "burp" and as she comes down..right before touch down put the flaps to the position of the burp,..this is at just above idle throttle position too ,..I say burp ..it's when your on approach and set your flaps and gain altitude instead of sink with flaps, the speed will depend on your planes weight and the position will depend on your speed..the trick is to find that sweet spot "the burp" at touch down speed and touch down at the same time you put the flaps to that spot,. then flatten your flaps to zero .your roll will be minimal once on the ground,..

for stol take off you basically reverse the process,.. set your flap to the "Burp" position,..power up get her in the air as she speeds up and climbs above 50 agl flatten your flap slowly as your speed increases to climb out without flap speed ,.. you'll notice as you climb and speed up,.. your actually letting the stick go forward to hold climb out atitude as you lose flap and your still climbing if you don't let the stick go forward your nose will climb more to the point of past the best climb out atitude,..which is not good it will seem like you need 3 hands at first ,..that's why you practice at altitude first