Pet supply stores have fans for pet crates, they run on AA bateries. I buy the batteries from IKEA, they are cheap and run a long time. I think the fans are around $9.99 USD. PetCo has sales, where you could pick up one or two pretty cheap.
I find my Hennessy Hammock just too much with the bug net. I am considering cutting it off. However, here in Oregon we have very little bug problems.
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