There are certain areas on most canoes where you could use very wide strips. Likewise, there will probably be other areas where you can't, due to required bending, twisting or edge set. There is no universal answer to your question and every boat design will be different. As to "using them with ease", I think you will actually find them harder to use. It is easier to cover curves and contours with narrow strips than wide ones. There is also a very real optical illusion which you need to be aware of when stripping. Due to the upward sweep of most canoe sheer lines toward the canoe's ends, even a side strip which is perfectly level, end to end, will look as if it sags downward toward the boat's ends. For this reason, it is a good idea to add a small amount of edge set (sideways bend forming a bit of upward sweep) to the side strips to counter this - also easier to do with narrower strips.