wire antenna effectiveness when curved or angled, question

[Eric Weatherall]

Does anyone have data or tips on exactly how straight a receiving wire antenna needs to be for maximum effectiveness, or conversely, how much a curve or an angle turn will reduce effectiveness?

I'm trying to hang an end-fed wire antenna, with the longest element at 35 feet, in a small apartment. I can hang 20 feet in a straight line diagonally along my ceiling, and if I bend at about a 45-degree angle, I can extend it to 30 feet. Hanging the last 5 feet would require another turn. I'm wondering if I should make sharp turns, gently curve the antenna, or if this is simply impractical.

[Matti Ponkamo]

I am no expert in this, so correct if I am wrong.
For end fed (random) wires, the main rule is: sharp angles are bad. --- 45 degrees is just about to be regarded as "sharp".
But then again, more wire length is good, so about 10 feet of more wire should catch more signals, in urban area more QRM, too.
If I were you, I would give it a try, and if possible, try to arrange so that the angle becomes a slow curve.
73 de Matti P., Naantali, Finland