GPO really is the do it all ski. Good ski to try different set ups on. Really like my ul's for touring but for slackcountry if I do a lap before/after on the hill they're a handful. CAST on my map core gpo's been the slack country set up but then I miss the ease and lack of weight of a true pin tech. Vipec/tectron /kingpin would be a good set up I bet
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