For riffing on the fat strings, what would thicken the tone more? Say your "straight"/"dry"/"normal" signal is panned to one side. I've read that if you run that signal through a short delay and pan it to the right side it will sound fatter. I've seen this with recording - that if you just copy one recorded track to a second track but offset it a few milliseconds and pan them away from each other, it "embiggens" the track. But doesn't it stand to reason that a chorus effect might be an even fatter option? Also I know adding an octave onto one or the other will definitely fatten things up. I'm wondering if you can get really big with all of the above. What is your experience?