The principle can be extended out as far as you have room. The 'W1FYM VEE antenna' consists of two legs, each approximately 270 feet long, spreading approximately 110-120 degrees, and terminated at the open end. For Field Day, a rope was strung between two trees to provide a 'feed end' support. The station was located near the midpoint of this rope. Mason's line is used for all other support and tensioning.
All strain is taken up by using mason's line.
The horizontal line and support lines should be installed slack before the wire is run. Tighten the horizontal line after the wire has been installed. The feed line is the wire itself, between the horizontal rope and the antenna tuner. If the wires are separated about two feet when they drop from the horizontal rope, no separating insulators will be needed. Where it hits the ground defines the ground rod location.