I have a 171/2' SMOKERCRAFT (aluminum). Have had it out in gusts to 40 mph. Never was worried about making it back to the dock, as the boat handled the wind and waves great. Although my 171/2' boat (open bow) did well on this occasion, the depth and spacing between the swells is what ultimately will swamp your boat. The closest call I have ever had came from a super-tug during last summer in the south sound on a perfectly calm day. This tug put out three monster wakes that broke over the bow even though I was ready for them. There is now doubt that a covered bow (regardless of length) is ultimately "safer" than an open bow, especially in the shorter boats.This I believe is true until you get above 20-21'. Also, your knowledge of the area, weather and boat skills will help decide what is safe.