On 29-Jul-2003, "David J. Van den Branden" wrote:

Substantially, though?

That depends. If you 're out for a short paddle, probably not. If you're out for a
long trip, maybe so. It all adds up. Going from 220cm to 240cm is an increase
of 9% - hefty if you're doing a lot of paddling. When I started paddling, 240 was
the recommended length for me. I use 220 now. It also represents more wear
and tear on old joints - significant for me. YMMV

Assuming your not in a rush.

I think it's a much more dynamic model. The paddle may require slightly more
input to keep the kayak moving at the same speed as with the short paddle.
But if I decrease my speed by 1/2 or 1 MPH and reduce my cadence and range
of motion a bit, I conserve that energy. The net may be less effort overall
or may be a wash... in which case it comes down to preferences. Food for
thought.

In this case, you may be comparing apples and oranges. If you're with a group,
slowing down may not be an option. If you're caught in nasty weather and have
to get to your destination, you lose that option as well.

If you compare the same kayak and the same course and speed, the shorter
paddle is more efficient. What you do with that info is up to you.

Mike