When I bought ‘Sandpiper’ I noticed that she did not fit perfectly on the support rollers. The one at the aft end was too low which meant there was an unfair load on the forward ones and the rubber supports either side amidships.
Today I built a simple bracket from an old piece of timber and plywood offcuts.
On arrival at a slipway I must first remove the bracket before launching ‘Sandpiper’. Total time for taking the bracket off will be no more than a minute.