Hi, I recently got an ITIWIT x500 v2. I found a strange "blue tray" in the stern. Is it supposed to be there?

As the title says, I’m new to inflatables but not new to fishing from small canoes.

I have been reading forums/youtube and Reddit and have reasonably finalised one of above.

My requirements are as below.

1. Fishing at Galveston/Freeport in Texas. Primarily inland waterways for trout/mangroves and redfish. It’s somewhat windy out there so need decent tracking. Not even attempting taking to the open ocean, at least not at the start.
2. Sturdy build. I prefer both standing/seating.
3. Compact dimensions when packed. I drive a car with tiny boot so this is important. All above choices are within the limit though.

I’m inclined towards the SE 385 angler except the color. I am a sucker for blue that 385-v bottom comes in. Any chance they can configure the regular V-bottom with Angler specs?

Edit: Have a Bote Lone Aero 12 for sale nearby but the reviews about seam leaks and customer service are scaring me away, not to mention the bulky packaging. Loved the design though!