Hi Russell,
I have downloaded some photos of a simple frame I made some years ago to support the mast for transport and also prior to raising and lowering it. I used to bolt on a raised section to help when raising the heavy HM mast but with my new carbon fibre mast it is not necessary. With a S.A. hollow mast it probably will not be necessary either.
By having simple thin section uprights it is still possible to steer the boat when the mast is supported for going under bridges etc.
http://www.capecutter19.net/forum/album.php?albumid=47
I will try to put in a picture at a later date of the arrangement taken from the cockpit side to show how it locates in the well. Hopefully it will then be clearer!
Regards
David Peck CC94