by midger » February 15th, 2016, 9:07 pm
I can't help much with Northern Idaho, but fishing around Boise will be limited as most waters close March 31st to Memorial Day weekend--Rivers like the SFB, MFB, etc. The Boise River through town is open and the Owyhee may or may not be fishing okay then, but flows will may still be around 15-20cfs--very low if the flows haven't started up for runoff but flows generally start increasing around that time of year.. That's probably your best bet that time of year.
"Should you cast your fly into a branch overhead or into a bush behind you, or miss a fish striking, or lose him,or slip into a hole up to your armpits-keep your temper; above all things don't swear, for he that swears will catch no fish."