I don't think I've ever seen a field where they made the pilots stand 150 feet from the runway to fly. That would cause trouble for people with depth perception problems. In my experience, 15-20 is more the norm. Isn't the fence the thing that divides the runway from the place the pilots are supposed to stand while they're flying?

Anyway, you might want to talk to someone about adjustments you can make to the plane to help slow it down on the ground. Landing slower would help, but I understand your desire to not stall it while your experience level is low. You can slip a piece of fuel tubing on the landing gear wire and then use the collar to adjust the pressure against the wheels. These will act like brakes and help slow down the plane when landing and during taxi. Just make sure you don't put too much friction on the wheels or the plane will nose over. [X(]