Re hot foot:
I use lace-up shoes, and I find my feet get tight and hot after a while. It's a lot worse if I don't remember to tie my shoes loose at the beginning of a ride.
I do not strap in the first two and only use the top strap and I still have problems. I installed an arch support, no luck. I will try some valgus wedges next as I have a floppy left knee. Barefoot may be next.