<<I doubt any Kayaks are made using a chopper gun, too much weight and
less rigid. Shower stalls are chopper gun.>>

Depends.
You mentioned Kayak's Gary.
Who's building the kayak?

Bayliner, Reinell, Classic, and a host of other low end motor yachts use
the chopper gun.
And these are or were up to 30 ' in length.
Heavy ?
Naw.
Just uses less product. and it takes 1/4 of the man hours to get the job
done.
The interior of the blown in glass is covered with a white fuzzy
covering to hide the roven woven anyway.
Go give the side of any hull on a Bayliner a shove.
The whole side from the rail to the water line will flex.
Bad.

Higher end Motor Yachts ( Hatteras, Sea Ray, Formula, Fountain, S-2,
Cheoy Lee, etc.) use the hand layed, and rolled in glass procedure.

I have no idea how the original manufacture produced the fiberglass top
for the adventurewagens.
It would take someone to just take a look into the interior of one to be
able to make this judgement.

It's possible that the gel coat layer with the first coat of glass was
manually done, and the rest could have been blown in .
Just for the sake of production speed.

I'm going out and check out some low dollar kayak's, just to see how
they were produced.--:)

RC