Here is a base I used the Acrylic Gel on. I didn't drybrush the wavetops with white, and I'm debating whether this is necessary.
I have another base with brybrushed waves. I'll see if I can get any good pictures of it.
Try this link too: www.modelwarships.com/index1.html
I would try an art supply store rather than the hobby store. I have never noticed it in any of my local hobby stores, but have found it in art supply stores such as Michaels.
The thicker you apply it, the longer it takes to dry. Usually I apply it a couple millimeters thick and have about 15-20 minutes of good working time. I use a brush to make waves.