I fish the everglades all the time, and have for over 40 years. Water levels are up so your not going to have the crazy 200 fish days that come with low water levels. They are catching occasional big fish in the 6lbs and up size, usually early morning or late afternoon. All canals at about the same as when you fished them. Some top water, mostly plastics fished slow through these hot months.
If your going to fish L67 I would put in along 41 out past the 20 mile bend, and run toward Holiday park and fish the cuts to the flats in the 3 pines area of L67. Big fish hang by these cuts. Also there are freshwater springs in this area with cooler water temps that attract bass all year round..
L67C is the small parallel canal next to the Big 67. I have a friend that still fishes it and has had good catch rates. They put a barrier about half way out with big rocks and a heavy chain across. If you running in low light be very careful for it. Also if you go you probably will not see another boat all day, so be aware if you have a problem.
Alligator Alley is easy access with good ramps. I prefer the west side of the Miami River, and run toward the Indian Property to the west. The morning and late afternoon have been good.
L28 is now blocked for access from 41, but you can access it from Alligator Alley with a new ramp. That is a north/south canal.
The Holey Land has a good ramp, and 20 miles of easy canal to fish. If you find current flowing fish activity will be up. Holey Land is on the border of Broward county and Palm Beach county, go west off of Us 27.
Loxahatchee Federal Preserve is west of US 441 at the end of Lox Road, on the Broward / Palm Beach line. It is a massive swamp, 20 SQ. miles, with a rim canal all around it. It has massive big fish, but you can only fish about 10% of it because of thick weeds. You do need a powerful T/M or a push pole to keep from getting stuck.
There are many more locations but these are the ones I normally fish, that still hold decent fish and big fish in the hot summer months. Good luck and let us know how you do!
I will warn you, take three times more water then you think you will need, just in case you have a problem out there. Dehydration will happen quickly, and WATER will save you life. Cell phone coverage is very good all over the glades, so have Florida Fish and Game #, and Florida Wildlife #, in case of needing assistance. I know how important this is from experience! Never leave home without these numbers! Lol