You should be able to search here and find a thread with Lauri's pollen sub, sugar bricks and syrup. Adjust quantities as needed. And yes in warm temps SHB can be a real hazard. Lauri is a queen producer in Washington State. The drying or hardening factor she states lies in how much soy flour is there, That is why she uses a mixture of beepro and brewers yeast. I have heard others say using all ultra bee it will not harden.
As far as feeding??? Some have a summer pollen nutrition deficiency not necessarily a shortage of pollen. And the target is to get "Fat bees" going into winter. So folks claim looking at feed times and the summer bee lifespan of the worker bee (6 weeks) play in. Again- for me pollen sub in the summer in my warm SC climate would be a recipe for sure shb disaster.
Lauri's protien patty recipe:
25# cane sugar
2 quarts cold water
2 quarts apple cider vinegar
1-2 cups olive oil- depending on your desired fat content
a sprinkle of electrolytes, about 1 tsp.
about 1 T Citric acid
splash of Mann Lake Pro health or other essential oil of choice
Mix these ingredients in a five gallon bucket, mix well with a drill and paint mixer paddle.
Add:
15 cups brewers yeast..mix well
add a few cups at a time:
...aprox 15 cups Mann Lake BEE PRO
(Dry ingredient measurements are approximate, I just dump it in a bit at a time with a big scoop)
Mix should be thick like peanut butter cookie dough. If it is not thick enough, just add more dry ingredients. Too thick and it will dry out in the hive. Too thin and it will drip through the frames
Let it stand an hour or so to thicken. I scoop it right onto the top bars in the hives with a big- one cup ice cream scoop. 2 scoops for big hives, 1 scoop for nucs, 1/2 scoop for mini nucs, but only after the newly mated queen starts laying. They won't take it up unless there is brood to feed.