ahhh...the opening lights.....
If you are going to squeegee them, use a cut down squeegee that will fit completely within the pane of glass.
I don't mean a perfect tight fit, but small enough so that you can rotate the squeegee.
Technique:
1. Wash pane with applicator (don't worry about getting top edge of glazing wet)
2. pre-detail top edge with a damp scrim (sides to if you like (not the side you will be 'finishing on though))
3. Run squeegee rubber between your finger and thumb (you'll feel any bits that might spoil finish and leave lines)
4. (this is the hard bit to put in writing!) Place squeegee on glass and have the tob edge of the squeegee on the top edge of pane, your lower edge of the squeegee a couple of inches lower than the top.
Ensure you are far enough into the middle of the pane so that you can then slide squeegee along into top corner of the pane.
your squeegee should be virtually horizontal allowing the top edge to glide down the side of the pane (without having to twist and rotate and therebye risking leaving marks)
Squeegee rest of pane as normal, sometimes the squeegee will be a perfect fit and you will finish vertically on the side that you did not pre-detail.
But if it has to be 2 passes of the squeegee, as you draw along on the first pass, make sure you are not making that pass with the blade virtually vertical, merely ensure that you are taking enough water off on the first pass so that there will be plenty left for the final pass.
If you only have half inch of water to remove, by the time you get to the end of the second pass, most of the blade will be bone dry and you'll risk leaving marks all over the place.
More experienced window cleaners will simply use their normal squeegee if they intend to use it on opening lights, technique is similar but harder to master as the squeegee will be longer than the pane is tall.
Much easier, and usually much faster ( oh yes it is guys, I've done time and motion studies on it!
) is to have a hand held sprayer, give the pane a quick, light, 'mist' and buff clean with microfibre (or scrim, but micro is best for this type of work)
Unless the opening light is minging, this method will give better results and it is quicker.
Squeegeeing opening lights or tiny panes will often leave lots of 'kicks'.
Hope I've managed to explain that properly!!
Ian