I have had 3 doubles (various Stellar lay ups and models) and the major problem I have found is that a single paddler won't weigh enough! The minimum optimum weight on the Epic is 130 kg. You will probably find it to be very corky ,and less stable. I guess you could counter this to a degree by flooding the rear cockpit a bit , then closing the bailer.
Skis past and present : New Epic V10 Ultra, Fenn Swordfish Carbon,
Stellar S2E Excel double, PRS 570 , V8 Club, V10 Sport Club,Stellar S2E Advantage double, Epic V10 Sport Performance, Think EVO II, Fenn Swordfish Vac Glass, Fenn LS, new model Stellar S2E double, Fenn Bluefin S Carbon Hybrid