What I did was record all the open strings, and then a few fretted notes to fill out the top end. The guitars are a four string Laguna bass and a 7 string RG series Ibanez. (Not exactly top of the line, but I like em.) Anyways, because the open strings were recorded, it’s easy to visualize whether something you’re playing is possible on a real guitar. Just open sample keyzones and make sure you’re not doubling up on a string/sample.
This is what it sounds like running through DSP chains I so amateurishly created. Regardless of the quality of my chains though I think the samples are useful: