Arby, what is the volume on your 6'1 Dwart? If you're just trying to get in earlier and catch more waves then it sounds like your issue is a lack of volume. The Dwart is supposed to be a wave-catching machine with its relaxed rocker and added volume... among other things. If you like the dwart and how it handles then perhaps adding a little more length and volume on another one will do the trick?
Surfboards aren't like cars or a snowboard. Why not give it a try? Check it out in person. If it looks good go for it. The worst that can happen is you resell it. Good Luck
If you know how to ride / turn a snowboard correctly subtle differences in boards mean a big difference in how they ride, just saying buying a snowboard is a lot like buying a surfboard except better cause snowboard shops let you demo boards b4 u buy where surf shops don't for fear of dings.