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Originally Posted by Mee-n-Mac
WIG = wing in ground, a "plane" that really doesn't fly normally but relies on the added lift you get when flying low (ground effect).
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You do not get more lift by flying in ground effect. You do, however, have less drag because the wingtip vortices are disrupted by the ground being there.
Don't believe me? Think of it this way - How many g's are you pulling in ground effect? I would hope about one. g = L/W and we can assume weight will not change a noticable amount while going into and out of ground effect. Since you are not pulling more g's, the only variable left is lift, which cannot change by itself.