I usually wash my hair over the side of the tub just because I'm used to doing it that way although I run the water and don't use a jug.. After you shampoo put lots of conditioner in your hair and finger detangle while hanging over the tub. Since you are using a jug I suggest washing and detangling in 4 sections twisting each section after detangling and rinsing the conditioner out of the twists after you have finished all 4 sections. this method is used in the shower as well by ladies with thick hair.
3b/c with some 4a in the middle of crown and back, medium to high porosity, frizzy, thirsty hair!