Holding steady with the wet compass doesn't work too well. These things have lead-lag errors and northerly turning errors that make them do stupid stuff, especially in turns. They will lie to you in almost any turn, either telling you you're turning when you're not, turning more than you are, or even turning in a direction opposite to what you're actually turning. They're no good except in straight-ahead, unaccelerated flight. A plumb bob works well in that situation, too.