Some of you may have seen the fans I use in my Hennessys ...the fan hangs on the ridge line.
Some of my DIY rigs do not have a ridge line,,,, and I didn't want to put a ridge line, just to hang the fan.
Below ii a DIY rig inside an ENO Bug Guard.
The fan is an O2COOL battery fan from Walmart @ $6.00
Since there is not a ridge line, I sewed a small loop on the inside near the end. This allows me to hang a bag, to store stuff, and a place to hang the fan from.
The black web girtle is what I use to hang the fan from a ridge line.. The plastic biner and cord works on this hammock.