Well, personally, I think the fabric back end on that boat looks really nice. I'd leave it alone. It will keep out the weather. The ONLY down side I can see is ease of breaking in by a thief, and if you roll the boat, the cabin will flood more quickly. BUT the folks on this forum say that a Dory roll has never or seldom ever been in the news. So, depending on your use for the boat you may well leave it alone. I think the lack of he solid bulkhead reduces the price of such a boat relative to one with the solid back end. On the other hand, the canvas, when removed and combined with a camper back will give you one really roomy cruising boat.