When I was in Brunei, Joseph Koh (the Singapore High Commissioner in Brunei and a great spider guy) taught me a trick. Strap an LED torch to your head like a miner's lamp and as you walk, the light from the torch will be reflected by spider eyes. Then walk to the spot and sure enough, there is a spider looking at you. I tried it last night and sure enough - it works with US spiders also. The US night spiders are more shy and so they often moved before I could take their photo - but I did get a few.
Here is a night spider and web
A night huntsman, I think, almost impossible to spot because her colors match that of dry leaves and the earth.
Another night orb weaver
C. Frank Starmer