Hand 1: Balls, missed the fold to cbet stat. He can have damn near any PP (it doesn't have to be 99+, the 8 might have scared his 66/77 and he's raising just because) A8, K8 (with a FD maybe?), sets, A5, 3x, etc. Fish do strange things lol.
Hand 5: Since he's still unknown, your raise is the best play. Only if you are 100% sure this guy does the c/minraise with air vs nits/TAGs would I call and let him bet the turn then try to get the stacks in. Just raise as your standard in this spot obv.