This is something a large amount of sailors neglect and is really easy to do. If you are resting your mast on the rear x-bar of your boat while traveling, make a saddle for your mast to sit in.

It takes very little skill and about $10 worth of wood and carpet. You will need a 1-foot section of 6x6. Simply carve out the profile of your mast on the top and carpet it. Then carve out the profile of your x-bar on the bottom and carpet it.

Trow on a couple eye-srews to fasten it to the boat and mast and you are set.