Use lock-ons and ladders. Originally bought 15' Big Dog ladders,not big enough, so I moved the arm rests out to where I have 24" between them and moved the stand 3" farther from the tree and made longer foot rest, and made 5' extension. And welded all contact points so no squeeks. Then Just started building them from scratch. Comfy enough to hunt all day.
Also use home made lock-ons.
Put them up in cover and add some if necessary.