50mm Square tube welded up and bolted to the wall high enough so the noses of the cars fit underneath. The best idea however is the H shaped timber sitting on the floor, this allows us to drive in until the tire hits providing perfect parking every time where there is only a couple of inches front and back with the garage door closed.
Behind the car is a roll of outdoor carpet that I roll out to rig up on in the garage, then just a short 50m Walk to the water.....