- 4" (diameter) log bump
- 8" log log bump
- progressive log ramp 4"-8"-12"-8"-4"

All secured with rebar - drill thru the log, leave no exposed iron

- off-camber 90 degree turn
- banked 90 degree banked turn with a high berm
- 90 degree turn with loose stones or sand on hard dirt

- 15' x 3' stretch of fist sized stones compacted into a swath
- embed a series of large stones off center line from one another, so that you can steer betwen them on your line. maybe 12" to 14" inches in diameter, sunken ~1/3 into the ground.

- dig out a 5' by 2' trench longwise, then pile the dirt at the far end, creating a "bump" to practice getting air at speed - and landing, of course.

Lay these out over a short course - should be plenty to practice on. PG