Quick update on this, I got energetic and made some quick coroplast smooth hub caps. The rear ones went on great, but the front ones (different rim) isn't as smooth but should help. I took it for a really short ride and didn't see a huge difference, but hopefully in the long run I see better averages
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The hub caps went on via zip tie though the rim. Works well and I based it on another design of hub cap that used zip plugs.
I think next on the plate is rear wheel skits. I better buy some glossy black paint first though :P.