My team did try steelhead reconditioning. First thing is you need them into a reconditioning pond to start as soon as you can, the longer you hold them the greater the mortality. Second your going to need a more than one barrel of formalin. ( fungus ) Then getting them on feed to build up their strength is critical and floating feed works best.

Now straight to a lake just as soon they arrive at a hatchery works best but most hatcheries cannot do that as eggtake is important. Bottom line it can be done but you will loose around half of the adults. Then when you get them into a lake strangely enough they do not bite well until late summer and then they are as aggressive as can be. No idea why other than it takes that long to get themselves right.