The MCYRA now allows interested owners to use a desk stepped mast instead of the normal keelson stepped mast.
Primary objective of the modification is to make mast stepping easier and safer, especially when setting up by a single individual. This is a substantial modification to your mast and not easily reversed so please consider the ramifications carefully, especially if you have only one mast!
Eric Conn has provided a step by step guide for those who wish to potentially attempt this modification and the pdf file can be downloaded here.