Little Wilson is managed purely as a
rainbow trout put-grow fishery: hatchery yearlings go in every spring and grow on the lake's natural forage before anglers catch them the following one or two seasons. In spring and early summer, when the water is still cool, work the shoals and shallow margins with a
chironomid under an indicator, the standard opening approach on small Kootenay stillwaters. As the shallows warm through summer, follow the fish down the drop-offs into the deeper basin with a
balanced leech or bead-head nymph on a slow countdown retrieve.
Chironomids,
leeches and
scuds are the standard forage base on lakes like this one across the region; no Little Wilson-specific hatch report has turned up to confirm timing on this lake in particular, so treat that as the reasonable starting point rather than a confirmed calendar.