[traceroute66]

> What if you train with instruments obscured?

No can do.

Because whilst during training you should be spending 95% of your time looking out the window, the remaining 5% are spent bashing it into your head how to do an effective instrument scan and also there are parts of training where instruments get combined with the outside environment (such as learning to get a radio fix if you're lost and correlating that with what you see out the window).

Obscuring instruments is sometimes done, but that's much, much, later down the training line.