Long Landing Approved

I fly a Cessna 150. My hanger is at the far end of the 11,000 foot
runway.
Our tower routinely offers landings with "long landing approved". Our
runway has distance remaining markers (and about 1,000 feet of paved
overrun space if the first 11,000 were not enough).

Is there any reason I cannot fly over the first 9,000 feet of runway
and land on the remaining 2,000 feet? The plane and pilot are capable,
I just want to know if there is a legal problem.

-Charles Talleyrand

P.S. Yes, I've tried. It's very easy to put the plane down in 2,000
feet, especially since there are no obstacles on the glideslope. With
any headwind I'm stopped within 1000 feet. And there is that
1,000 feet of overrun, which is unneeded but nice to have.

P.S. S. We have no crosswind runway. Sometimes I wish one could land
sideways on our huge piece of pavement. It's not quite wide enough,
but with a 20 mph wind ....