With water temps getting into the 80 degree range it is worth considering giving the muskies a little break. Catching a fish in these conditions puts an awful lot of stress on them and if you intend to release that fish your chances of a successful release are significantly compromised. I know, I know we all want a shot at catching some fish and the fishing has been pretty good but this is one of those "just sayin " kind of posts. Maybe consider fishing colder water (2 stage) fisheries for a bit until the lakes get a little relief from the excessive heat.