MFS is quite easy to get on
if you have a lot of flexibility on your dates and you can go at a moments notice.
Its a 12 hour drive from here so I'm not so lucky to be able to go at a moments notice. boise and montana folk have it made.
I almost always see cancellations early june at high water above 5' and usually late in July when its around 2' and when people are worried about not having enough water.
I ran an 18' cat from the top at 2.1' ... a lot of "pick your poison" and there was only two places I got "stuck" more than a few seconds. But this was fully loaded I brought everything I wanted.
So pack lighter and give yourself a full two days to make it past Pistol and you are golden down to about 1.7
Hey, if you want me to take a dump in a box and mark it "guaranteed", I will. I got spare time.