I've just returned to the US after half a year toiling away in Honduras. My roommate there, Dan, happens to have been an experienced live guitarist/bassist; when he heard of my plan to keep two guitars, one assigned to standard and one to DAFDAD tuning, he told me that I should probably make adjustments to keep the DAFDAD tuning from ruining the neck. I now submit this issue to TGP: what adjustments should I make to protect the neck? I have a Fender Strat (standard model) that I plan on kicking down to DAFDAD. (For that matter, I'm also thinking of knocking my Epiphone Les Paul down to double-drop tuning; I like my capos a lot).