Agree timed turns, followed by let the compass settle and check, are the way forwards, and I was only taught this method - precisely to avoid the dip problems of compass turns. Though in the event of electrical failure (hence failure of the turn indicator/coordinator) you'd have to know your bank angle for a rate 1 turn (calculated from speed, of course, though I forget the formula because I know what it looks like on the ac I usually fly!)
Tim