This is my spinnaker tarp, I am posting this so people can see what's achievable for an hours work and less than ten quids worth of materials. You could spend more time and more money and have a better finished product but I am cheap individual and inpatient too 
The material is spinnaker and cost me £5 ish including postage for a 2.2m X1.5m sheet.
The weight shown includes six pegs, 4 guys, bag, and the home made extend-able pole.
A trailstar it aint, but I'm happy enough with it, just need to use the bugger now.