If you will trailer this DS, then I'd suggest modifying the mast as Joe mentions. Rudy at D&R has the parts and a good set of instructions. A local sparmaker can do the work for you, cost will be $100-200 or so (parts from D&R will be around $50-60).
If you will keep the boat on a mooring (or can leave the mast stepped for the season) I'd do as Lord Nelson did, that is basically how I step/unstep the mast on my DS II. It is a bit of a challenge getting the mast down through the deck and lined up with the step..... but right now, I like the solid feel of the one-piece mast and don't have the $$ to convert to a hinged setup. I've seen other ideas, but most end up being more complicated than really needed.