The sealed compartments came with a variety of closing mechanisms.
My kayak at the rubber lid, followed by the yellow cap and then bungee cords to cleats.
This definitely gave me a preference for what to look for when I buy.
The comfort of the seat is critical.
The positioning of the foot pedal rests is also critical for comfort on long tours.
Took me a while to figure out why some had pumps. Now I get it. Water displacement.
Not for purposes of watergun fights, especially at low tide when the much comes up with the water. (David!!)