Last years screen 8' x 11' made of 1x2's frame with painters drop cloth stapled tight and bolted to 4" PVC pipe. It worked out well for a inexpensive outdoor theater screen. but storing was a problem.
This years screen upgrade 10' X 18'. I found an 18' motorized awning from craiglist for $70.00. For screen material I use a billboard (unused) tarp which was suggested by AVS member Cool Face. Thanks Cool. Also i use a few tarp clips and ball bungees wrapped around the 4x4 structure to smooth out wrinkles