[roundbuilder]

I always rinse just to be safe. I have seen some verey crap jobs done with wfp where no rinsing was done, it takes 2/3 seconds to rinse a paine of glass so not exactly time consuming.

[bobplum]

I've started doing one agitation of the glass in the normal fashion.
Then the second one side to side going down the glass.
So rinsing with brush on/cleaning if you like.
It seems to be ok.

+1

[bobplum]

i also feel it depends on the flow rate

[advanced]

How  bloody lazy  not to rinse , close inspection sotting galore.

[John pearce]

TRAD  =  wet up with applicator, then squeegee.

WFP   =  scrub with brush, then rinse.     surely   

[mac74]

Not rinsing off properly, is all good fun until you get found out!

[gary999]

never rinsing is stupid...but have no problems on maintainence
cleans with nothing visible on glass...a high flow you are virtually
rinsing as you scrub