I don't have access to boat yard or suitable lifting equipment so pu the trailer on blocks then using woden beams (3"x8" I Think) across the boat jacked the boat up off the trailer with 2 2 ton bottle Jacks. Boat is about 50cm off trailer so all permanently wetted bits of the keel exposed. The boat is on a drying mooring so keel only full down when in use. You also need lots of woden blocks to walk each end of the boat up.
I will take the keel out the top some day but no sign of any issues once I get above the first 40cm so just going to clean Up, put on some suitable paint and Antifouling
Zander Parker 235