[Suicide Junkie]

I would prefer a tractor beam based system.

Use Component -> tractor beam
Target -> base/crippled ship

Both vehicles are then put into a fleet, and given the (weighted by mass) average of their speeds.

So a 500KT cruiser with a T-beam and 6MP, can tractor a 1500KT space station.
The final result is a ship/base fleet with 2MP available, for one turn only.
(500KT * 6MP + 1500KT *0MP)/2000KT = 2MP (Rounded Down! No escorts pulling starbases at 1MP)
An escort trying to pull the station would need 10MP just to move the base 1MP, but a Baseship would get half movement (since the two weigh the same)