: I noticed that there are 2 different versions of the Sea Rider. I
: didn't find much when I searched for information on the
: multi-chine version. Does anyone have experience with the
: multi-chine, or perhaps someone may have paddled both of them?

I see no advantage to the Sea Rider multi-chine vs the Sea Rider single-chine. I was just experimenting when designing
the multi-chine version.

Trial and error experience with both single and multi-chine SOF's has established a baseline that I use.

On my boats, I've found that symmetrical single chines up to about 17" separation perform well, but
much wider and they start to feel sluggish in the water. To retain an acceptable slope from gunwale
to chine, my boats that are over 22" wide require a wider than I like single-chine separation.
The standard Sea Tour designs are 22" beam / 17.5" chine separation.

As such, I went to multi-chines on the 24" wide Sea Tour EXP's and Sea Bee. On narrower boats like the Sea Rider / Sea Ranger,
both with 16" chine separation, single chines work great. These boats track well, but turn very quickly when edged.

I can speak only for my own SOF designs ... Your results may vary :) Tom