as my hapless quest to learn this game continues, I seem to get hung up (fouled) at just the wrong time.

despite my increasing awareness of this rule I get snared even when I think I am being careful.

this usually occurs when I anticipate drift in another "ship" ; usually a derelict.

believing that the vessel is going tom drift, I feel free to move or turn my stern into the space (usually the stern hex) of a vessel that is going to drift. Then, when the movement phase is resolved, I find that I have failed. Since derelicts are usually involved, this occurs at an advanced and critical stage of any game.

I usually take this chance with frigates but sometimes with SOL too.

What am I not getting? If the vessel is due to drift in the movement stage, why can't I enter the vacated hex?

Now, because I am afraid to anticipate drift, I find my movement options further restricted.