I usually raise and lower the mast with the boom attached. I had a custom sail cover made from www.TrailerSailor.com that added zippers to the bottom to have a place to stuff the boom vang and main sheet.
Make sure you have a gooseneck connection to the mast... some older X's don't. For trips over 100 miles I usually just take the boom off and leave the sail in the cover and store it below.
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Erik
et you've had great fun. Really like those pinned spreader bars, but thinking they might be a bit more difficult for the M rotating mast - single piece speader (I think) bent around the mast.