I just wanted to mention that the water level is low at Lake Louise. Launching a larger boat will be tougher as the launch is running out of depth. Stay clear of the points and islands ESPECIALLY near Bird Island and the small chain north of it. There are rocks 3-6 inches out of the water in places where you can usually run a jet boat without harm (don't ask how I know ).
Maintain 1/2 mile between you and the western shore from Larsen Bay north for a mile (past the beach and the weeds). It is very shallow.
I did not try the channel to Susitna. Boats were going through it.
It was moonless and when it got dark, it got VERY dark, VERY fast.