SMT I see what you are saying there, I do the waggle. For me, I’m seeing if the shaft feels like it will hold up and I’m most definitely seeing how it feels weight wise. If it’s super light, I’m out.. I know myself enough to know even if I try to slow down, I can’t and light clubs = me out of control.
I do think there’s something to the balance point, I just got a set of irons because I wanted heads, came with 120g steel shafts, took a couple swings and they “feel light”, there’s no weight in my hands and it feels too head light as well. I have yet to dig into it, way too busy to have bought a project.. but it’s what I do lol. Funny part is, where do you go when you want a heavier shaft than that? There’s not much. I wish there were some reasonably priced 130g graphite iron shafts that are weighted like the old s300 line, I’d be a pig in shit. Im sure somebody makes something like that, I’m still allergic to $50+ a shaft for irons.