Hi all, ive been trad for 9 years and recently using wagtails on a pole, ive found this o.k but now wanting to start with wfp in the spring. I am considering wcw backpacs to start with. my customers are fine with me using my current poles so they hopefully will be ok with waterfed. what is bothering me though is how many cleans will it take to get the windows to a good standard can i achieve an acceptable standard on the first clean? and if so, how?