The PS is too low to take advantage of the tractor Beam ability. TB works best in a high PS ship.
From gw point of view of using it to deny shots, maybe. But to take advantage of range bonuses and agility reduction it depends what you're flying alongside it. A Spacer is perfectly fine flying alongside three Enforcers or four Marauders, for example. Tansarii Vets out-PS most other genetics. and then there's the Serissu option others are mentioning.
Laetin is once again one point too expensive for my needs, though. :s