Mountain 49, i did this with my son(12..read...short legs) in late august after what was 5 or 6 weeks of incredibly wet weather. I wore scree gaiters, he wore my snowgaiters...much higher and waterproof. Definitely bring a couple extra pair of socks, both for water as well as for a long day. The water crossings were slightly above boot high for me...i don't wear low-cut boots, more like mid-cut ones. We did have to travel within 20-30 feet up or down stream to find the most agreeable crossings. The first & second we went downstream, the last crossing was stompable with goretex boots.
FYI as you near the junction with Davis (north end) the trail guide warns of difficulty following the trail, it is not that difficult in non-winter conditions..there are left over yellow blazes that can be spotted and there is a sign post for tenting at the most confusing area, directing tentors right and left, just keep going straight. On the return trip i hesitated here to get my bearings, then looked down and behind me and there was the tent sign.
The spur to Isolation is obvious on the right, look up at a tree on your left and there is the sign.
Have fun, hopefully you get the full view from the top!!
ctsparrow