Turb doesn't always smooth out by climbing. Yesterday, while flying back to SoCal from NoCal (I was around Visalia), I was hitting some pretty good light to moderate turb at around 9500. I asked ATC for ride reports, and they said mod turb had been reported between 8500 and 13,500. I descended to 7500, and everything smoothed out. It was clear skies where I was, but I was west of the Sierras, and the wind was out of the east.
Airmet Tangos aren't a guarantee for turbulence. There was one for most of my route of flight for under 12k and below, and only in that one area did I find any turb. More times than not, I have had smooth flights through ATs. They are not in and of themselves, reasons to cancel flights.
Use winds and temps aloft forecasts, pireps, and ask ATC for ride reports. Also, look at any frontal activity, note the surrounding terrain enroute, and figure time of day for your flights.
An understanding of types of turbulences and their causes is a big help. Here was a quick site I found helpful....
http://www.boldmethod.com/blog/lists/2016/03/types-of-turbulence-that-can-rock-your-flight/
I always, immediately, slow to at or slightly below Va when the turb gets kicking pretty good. I also, tighten the lap belt, so I don't get knocked out hitting my head on the ceiling....
It's a part of life in the SW.