On blocking: Is blocking Soontir really that easy? A small based ship only has a width of a straight 1 maneuver. So, even if I park a Z-95 right in front of Soontir, he could still make a maneuver that passes the Z-95 (e.g. a curved maneuver) and get his actions.
Well, trying to guess where your opponent is going is the essence of the game.
While you can't be sure to block him each turn, you can try to pinpoint the probable locations. While stressed, he's stuck with his speed two moves or straight 3-4. Of those locations, there might be an asteroid in the way or other location that while you won't block him, he won't be a menace that turn. That generally leaves you with 2-3 possible locations if your opponent wants Fel to be useful this turn. Sometimes, you don't even have to actually move your ship to block him, the Fel player won't even go there if there is a decent probability that an enemy ship will block him, because he just can't afford it. Moving last is nice to reposition, but it's much harder to predict where every other ship will be when it will be your time to move.
Remember that with this loadout, Soontir Fel will cost 32-35 pts, a third of the team value, and only has 3 hull. He can be untouchable, but he can go down just as fast. Your opponent is probably just as stressed as Fel when maneuvring his ship, because there is no place for errors.