I can't see any advantage of waiting for the frame to drip before rinsing. Maybe someone can explain why?
Many jobs i just have a high flow rate and don't rinse, but the times i do rinse is straight after it is cleaned. That way there is maximum water running down the glass at the same time, which is more likely to catch any debris.
I always give the top frame a good wash but i only ever rinse the glass.
With pencil jets i aim them just under where the top frame meets the glass, as the frame will act as a barrier and there will be no splashing above or around that will (or should) result in no spots.
If i was starting out wfp i would definitely rinse the windows 1st, rather than use a high flow rate. Once the job has come up good a few times i would then try to do it without rinsing and check the results. If it is good, i reckon i have saved a 1/3 of time per job by not rinsing each window.