Wear a life jacket,
Scope the take out, you don’t want to miss it.
Keep to the middle, away from brush on the sides
Float mid day to avoid people fishing
Reds fly shop will shuttle your car for $40 or bring enough people and cars to shuttle it yourself
Big horn to Umtanum will take around 3 hours
Umtanum to big pines is about the same.
Maybe a little longer with stops
Have fun