1. Tell me how long it will run with the nose pointed down.
2. How long can you fly in that attitude?

If the answer to the first question is longer than the second, it doesn't matter.


You don't want t the clunk forward in the tank, if it gets stuck there you will flame out climbing or inverted.
You won't be at full throttle with the nose pointed down, and the line contains enough fuel for the downline.