Roger's method is the best way. Regular inspections over winter with remedial work as necessary. On the new Trads with the autophoretic coating on the chassis, the points to watch are the front edge of the chassis, the joint between the chassis and the cross tube frame and the double skinned triangles at the base of the bulkhead. I don't jetwash because it's possible to force water where it shouldn't get. I've occasionally used a hand pump garden spray to rinse off after cleaning but this has much less pressure.
I'll be using mine when I can through the winter. Life's too short and one thing is pretty certain. Your Morgan will still be around when you're not.
