I also have storage under both dinette seats that is accessed by doors. What I did was purchase some plastic baskets at Wal-Mart to fit the door opening and tied them together with wire ties, three on each side. I just pull them out all together and slide them back.
Jayco 2012 36BHDS
On permanent site in Central PA
Denny, Melissa, Talia (granddaughter) & Tango (Golden)