Hi,
I was in K-Mart last evening and since I need a wheel cover, I checked what they have on sale -- and they are selling all of their 14", 15" and 16" wheel covers for $16 for a set of 4.
Get 'em while they're hot!
I got the smoothest style of 15" and I used some foil tape I have to cover all but one opening:
I put the wire hoop in the tightest setting, and we'll see how it goes...