If I’m you’re in late game and you need metal, and you just so happen to have a quetz and a platform saddle, (you do not need one but it will be a little harder) you get as many ankys as you want or anything with weight reduction for metal, and fly around with an argentavis on follow if you want that extra that extra weight off, and park your quetz somewhere then get an anky and your argentavis, collect your metal, then store in the ankys, if you do not have a platform you could just carry around your anky with your argentavis. Once done you could just put some in your argy and some in your anky and put you argy back on follow. I hope you found this helpful