All hydraulics are “relaxed” when I shut down inside the hangar and rest the FEL implement (whatever is on it at the time) directly on the concrete floor. There is never any condensation/moisture concerns in there. Mostly attached implements are lowered for both safety reasons and to remove strain on the hydraulic systems.
The implements stored outdoors are on top of metal R-panel sheets laid upon the ground, with landscape timbers on top of the R-panel and the implements resting on those timbers. If it’s the bucket, it’s tilted slightly to avoid water accumulation (because that breeds mosquitos mostly, but also just to avoid water puddles in it.) All 3-pt implements stored outside are on wood timbers and important mechanicals are covered with various buckets/old plastic coffee canisters/etc to prevent water into u-joints, pto-clutches, etc etc. Box blades, scrapers, carry-alls, etc will be just fine outdoors just about as durable as the pyramids.