Everyone I fly pattern with lands dead stick. I don't think I know anyone that lands with the engine running even a practice.
A great deal of people also land using spoilerons (Raised ailerons) to bleed of speed and get the plane down.
Secondly we're flying far, far further out than you would when you're sports flying, say 150-175m... thats give you plenty of time to loose speed/hight.

I think your problem is due to several thing. Slightly over powering the plane.The 1,20 surpass is a heavy engine, far,far heavier than say an OS .91FX which seens the norm in that plane, so you're over weight thus higher landing speed. Wrong prop...16dia would be better, wrong landing technique, to close in etc etc.
The good thing is that the answers simple.

If you're say, in your case, flying a up wind leg 100m out, at about the 60 deg mark, bring the engine down to 3rd throttle and make a 180deg turn to bring you back on the down wind leg ending 1/4 ish'throttle.
When the planes passed the end of the runway, 90deg turn in, fly straight desending at idle, as you approach the runway (I've now cut my engine) do a 90deg turn to line you up and aim to touch down infront.
Thats what we do. It'll give you plenty of time to bleed off speed!

When you use spoilerons you can cut that approach dramitically. You even have to carry engine to stop the plane comming down beyond the threashold.
Practice, experiment... it's fun.