I have read a lot of thread about tarp and still can't decide. Too much choice? I have already worked with silnylon and will use this time again. Here what i'll do with my tarp:
Solo Hammocking 2-3 times each year (more if wife decide she like it). Usually when bicycle touring.
As a an A-frame for bivying when ultra-light bicycle touring with my wife or alone maybe 5-6 night each year.
As a rain protection (pitched flat or at an angle) when car camping or bike touring (ate least 15-20 night each year). We bring a full-on tent then. In 2 years, we will leave for a one year South America bicycle trip so we will bring this tarp as rain protection.
One choice would be Blackcat from Blackbishop. This tarp is really nice. Could it be only ground pitched as an A-frame? Other pitch maybe usefull too for us. Big enough for 2 hammock in emergency?
Are non catenary tarp better for my need? If i use catenary side, am i better to stay away from catenary ridge since i want to pitch in different configuration?
Since i usually carry the tarp by bike (or backpacking) i need something light, in a small stuffed package, dependable. Best size then? Is perimeter grosgrain webbing really needed on silnylon tarp?