Apologies for late reply - work delayed a visit to the hanger to get additional pics. N7691B and I are now based in Houston TX, exploring the area and interested to find other Cruisemasters in the region.
Originally attempting to lift with ad hoc designed blocks of wood - I became uneasy - and after a pause, hanger talk, and assistance from Jason Paradis, from A&P BCC register, the following brackets were fabricated on the go. The design is not engineered, but it cradles the lifting point providing clearance to hull, electrical wires and spar bolt. I am sure this is not an original creative solution - but it has provided me additional confidence working underneath, accessing cockpit, and performing gear tests. The pics and drawings may assist others in fabricating if they see design a value. - drawings were an afterthought and are no means professional.
Andrew