It's a good place to mount yer outboard motor.

I used to use a 19 foot long racing surfski to paddle out to Horseshoe
or Breakers Reef, where I would then freedive ( and tow the kayak like
a torpedo float with flag). It was fast and easy to paddle--I could
average 6 to 7 mph easily, and in a hurry could average more like 8
mph ( based on Garmin GPS) The problem was in reaching the dive site--
the reef, you have to put on your dive gear. No problem for some gear,
but getting fins on was a huge issue--the surfski is very tippy. For
some things you can sit on it like a surfboard, with your legs
dangling, and this makes it pretty stable, but for fins this would not
work. If it is rough at all, you don't want to chance losing one by
putting them on in the water. Even if you find a good way to put all
your gear on--for you, it becomes a pain to rest at the dive site, on
a tippy boat. This outrigger based surfski would really rock! It would
travel almost three times as fast as a scupper pro for your trip to
the reef. If the seas come up while you are diving ( I have had storms
come up while freediving like this in the past) , the surfski make the
big waves really a fun and enjoyable paddle home....it will handle 10
foot seas with ease, and can even ride many of these waves from the
reef back to the shore, sometimes for 10 to 20 seconds at a time
before each wave dissapates. The surfzone is easy enough, except you
DO NOT want to be thrown down on the sand beach itself, if that is the
way the waves arrive at the shore--this would damage the
fiberglass...so if waves are coming in like this, you have to dismount
just prior to final beach entry. A 19 foot boat like this weighs maybe
35 pounds ( mine did). I never had the outrigger, like the one in the
link I show, but I would consider this again!