Adapting a Scarp 1 inner for a 10×10 pyramid?

I’d like to use my spare Scarp 1 inner in my Oware 10×10. I plan to use wooden dowels to prop up the four corners of the net tent as the Scarp has struts there. Any suggestions for an easy and cheap method to attach dowels to the corners and keep them removable for packing?  There are two plastic rings in each corner. Inserting a dowel there would be straight forward, but I haven’t thought of a convenient way to fasten them temporarily.

Thanks for any help.