Going to be making my own tarps. One tarp will have square ends the other will have a catenary cut. I am planning to add removable doors to both by using velcro to attach the doors to the tarp. Any idea on how to size the door? 1/2 of the tarp will be 65 inches, so if I want an isosceles right triangle shape for the door I can use the formula 2*a*a = 65 * 65. a=46 inches.
Do you think that door will be large enough?
The above picture is for the tarp with square ends, I realize the ends on the catenary cut tarp are going to be longer.