Mast base organizer?
I had a similar issue with my former 25''trailerable. Added spinnaker gear, vang etc, but didn''t want to put more holes in the coachouse. Made my own out of stainless plate, large enough to fit under the mast base/tabernacle with full length tabs sticking out on all four sides. Worked very nicely, though should''ve used a thicker guage as there was some bending near the vang.
Go to www.dwyermast.com, check under "hardware" for "halyard organizer plates" for the basis of my idea.
You can do a cut & paste if that link doesn''t display correctly.