RE: Raising stall speed?
My question is are you looking for a stall break or are you trying to increase the landing speed and kill the float? If you want it to stop floating I would add weight. The plane should act the same but come down easer. Adding stuff will change the stall chariteristics, but the speeds will be too close to the same unless you get evil with the mods. I dont think you will get a light flat bottomed wing pane to plop on a runway. My sons Kadet MK2 likes to be slightly fast and flat to maintain control. I like the way Sticks can plop down or flown flat.