Have you called Gene at "EZ Poleholder"? I seem to recall that he was coming
out with a umbrella for the Millenium seat rig. If not go online to Walmart and
get a Sportbrella. If they don't have it in store, I beleive you can get it shipped
to the store for 2 day pickup, but Gene would be my first choice. He's also a
sponsor member of this site!