#1: Fold- A ragged A+ FLush draw just isnt worth it. Fold and keep out of a bad situation.

#2: You correctly bet this flop to try and take it, now it seems like this guy chased his AK or had a Q and is just value-betting you. Also possible he was chasing a straight draw. Nothing he could have that you are ahead of.

#3: I raise to 400 here, trying to get HU with the SS. If someone else pushes over the top you are in a sticky situation, but it depends on when blinds go up as to whether you call/fold.

#4: Very close, I probably wait for a better spot, depending on when blinds jump to 150. A minraise UTG and 2 callers makes a nice sized pot, but at a $5, I am always scared of an UTG minraise. Probably a fold.