Light or heavy headstocks have never made any difference to me, not in my standing / playing electric days (then) or in my sitting / playing acoustic days (now). Even with 12-strings with heavy-ish headstocks, I've never had a problem with "neck dive."
For those of you who do, could it have something to do with the kind of straps you're using? The smoother the back of the strap, the more you can shift the guitar around your shoulders, which is more "rock 'n' roll" I guess -- you can aim the guitar at the floor, aim it at the heavens, aim it at your soundperson.
But you get more friction with rougher-backed straps, which tend to keep the guitar in one place.
BTW, not everyone thinks increased weight on the headstock is a bad thing. They make devices to INCREASE the weight on the headstock, called "Sustainer Clamps." They seem to be used mainly by electric bass players.
I've encountered a few stores peddling sustainer clamps, and am absolutely blown away by the idea that they could do anything at all. Can a solid metal clamp on the headstock of a guitar or bass g...
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