You have a pretty big boat. A lot of the boats around here are much smaller and lighter and a layer of fiberglass on the bottom is sufficient protection from abrasion when ground running.

You might try removing the wear strips. If that solves the handling problems on water, try adding temporary skid pads to the bottom for ground running. I did this a while back to run my coro boat in the street (no fiberglass on the bottom). I just duct taped a strip of coroplast to each side of the bottom of the hull. Worked great!