Generally, an open boat - a canoe - will be more susceptible to wind than a decked one. Wind seems to catch the upwind side, burble over into the boat, and then catch the downwind side too for a double whammy. Wind tends to curve over a deck with much less energy imparted to the boat, and therefore less effect on the boat - a lowered wind signature.
Arrangement of paddler and load can make a large difference. When wind turns a boat, it can turn it either into the wind (weather cocking) or away from the wind (lee cocking). Most boaters prefer the lesser of two evils, weather cocking. A boat that lee cocks tends to gain speed in a wrong direction and take off on its own, maybe even gaining speed. When a boat weather cocks, it tends to stall out, giving the paddler another chance to catch the situation and apply corrective actions.
Since a boat can be shoved around by both currents in the water, and currents in the air, paddlers are, at least partly, at the mercy of their environment. Boat design and paddler technique can mitigate unwanted effects of wind and water, but not eliminate them.
All that being said, I've found a decked canoe (or a kayak with some deck removed to enlarge the cockpit) to provide a pretty good start at a boat. One that lies flat in the water tends to be balanced to effects of both wind and water. Very little rocker provides good tracking across open waters, but lousy maneuverability on rivers. More rocker allows faster turns for maneuverability, but wobbly tracking across open waters.
An open canoe with a canvas deck that snaps on can provide a good compromise for ease of loading and unloading, lowered wind signature, and protection from waves and rain getting on gear. Canvas (nylon now days) decks can entrap a paddler, so design is critical.
Arrangement of paddler and load can make a large difference. When wind turns a boat, it can turn it either into the wind (weather cocking) or away from the wind (lee cocking). Most boaters prefer the lesser of two evils, weather cocking. A boat that lee cocks tends to gain speed in a wrong direction and take off on its own, maybe even gaining speed. When a boat weather cocks, it tends to stall out, giving the paddler another chance to catch the situation and apply corrective actions.
Since a boat can be shoved around by both currents in the water, and currents in the air, paddlers are, at least partly, at the mercy of their environment. Boat design and paddler technique can mitigate unwanted effects of wind and water, but not eliminate them.
All that being said, I've found a decked canoe (or a kayak with some deck removed to enlarge the cockpit) to provide a pretty good start at a boat. One that lies flat in the water tends to be balanced to effects of both wind and water. Very little rocker provides good tracking across open waters, but lousy maneuverability on rivers. More rocker allows faster turns for maneuverability, but wobbly tracking across open waters.
An open canoe with a canvas deck that snaps on can provide a good compromise for ease of loading and unloading, lowered wind signature, and protection from waves and rain getting on gear. Canvas (nylon now days) decks can entrap a paddler, so design is critical.