They're in electrobraid now, but I was kinda thinking mesh would help keep critters (like our local coyotes and those EPM-carrying oppossums) out, as well as if I decide to breed Rhythm someday keep a foal in. Thanks for all the advice everyone, and any more tips are appreciated!
Thank you MadMare!!!
"So now boss man, here's my 2 weeks,
I'll make it short and sweet!" --Sugarland