I just bought an Oasis as part of my fleet which also includes a PA. I think I came up with an idea to store either kayak using the triangular packing foam that came with my Oasis. I bolted a piece of wood to some milk cartons, then I Gorilla glued the packing foam on top. I have two sets of milk cartons that I can move around until they are exactly 12 inches apart. Finally, I lift one end, then the other onto the supports. One person can do it.
I've got pics, but I can't figure out how to attach them.