The fishing in the Yellowstone area may be ok in the beginning of July. Here in western WY, we got 600" of snow at 9000 ft. And I know the corridor from here (Jackson) up to Bozeman just got pounded as well. This snow has not shown any signs of meltage yet, as a matter of fact it is snowing now, so it could be a late year, but a good chance the Henry's Fork will be in shape by then. The drive down RT 12 is beautiful and a visit to Poppy's shop is required for any two handed caster. Sounds like a fun trip.