I have fussed about leaving low ground effect earlier than necessary and hanging out well out of ground effect at slow speed in a high pitch attitude. That has always bothered me as an observer of takeoffs from my local airport at low DA with a half mile before trees. And I have fussed about little airplanes with big engines being poor trainers of a better better energy technique for this and tighter situations.
What if there just isn't much room for extra seconds acceleration in low ground effect? Now I may wish I was as good as MTV or Cary with the math and wish I had Aktahoe's light airplane with big engine.
What do we do with our normally powered airplane when it gets pucker tight? Let's say MTV's POH and math say we can just make it.
Use all the strip, even if you have to pull the airplane back into the trees. Sometimes a crooked run to the usable field is possible.
Set trim for cruise or slight descent in more powerful airplanes.
Go down hill and down drainage if at all possible.
Plan for lowest place in trees or even a rudder turn in low ground effect around trees, if possible.
Get tail up or nose wheel just off as soon as possible. Practice somewhere else what Just Off is.
If significant acceleration does not result from getting the tail up or nose wheel just off, something is wrong. Abort.
Get the main wheels off as soon as possible. Whether with flaps or elevator, we need the airplane flying in low ground effect as soon as it will fly in low ground effect. There is no book figure for this. Practice and find out when (by sound and feel; not by instrument) your airplane will first fly in low ground effect.
If significant acceleration does not result from getting level in low ground effect, something is wrong. Abort.
Wiggle the control wheel fore/aft just a bit to stay ahead of the aircraft and stay in low ground effect. Any pitch up here or staying in a pitched up attitude will hurt us. Wait patiently for the gut feeling we need to pitch up now.
When a Vx pitch attitude will take us just over the trees, pitch up to a Vx pitch attitude and direct our course just over the trees. This too needs to be practiced by staying in low ground effect on takeoff from longer fields with more speed. Only with practice will we get comfortable with when we should start up. Normal takeoff leaving ground effect sooner than necessary are practice doing the wrong thing.
If deceleration occurs, level the aircraft over the trees.
Like with anything, what we do most we do best. We need consider how many iterations of low ground effect we have and how many iterations of leaving low ground effect earlier than necessary we have. Yes, I know : Pilots will talk. They have been talking about me for fifty years and I am still puttering around.
