I am a believer that a wetting agent may work well for one person under certain conditions and not at all for another. I have tried several (10+) wetting agents here and found one that works very well for me. I would recommend checking out the guys at Ameriturf. I've used their products for years going back to when they were only doing fertigation custom blends. Now the distribute for several big companies as well as their own "proprietary" line of products. Here's a link to their wetting agent page
http://www.ameriturf.com/water.htmI use the Cycle at 4 oz with 1oz of Pervade (Floratine) and love it.
They also distribute Redox, Griggs, Qualipro, Aquatrols and Precision. Their in-house line is labeled under Green Industries and includes foliars, wetting agents, and pretty much whatever you want in the way of fertigation.