Here's a thought, I think it's what you were looking for initially . It is TNE/FF&S(1?) rules but it should fudge to most Traveller systems. I have been thinking along this line since you first posted, so I'm sorry for the delay in putting it together...
First have a look at
http://www.downport.com/bard/bard/bardvera.html scrolling down to section 6500 - Satellites and clicking on the AMDADS Booster (VERA6502). Your enterprising Vargr Corsair Captain should be able to 'find' a few of these without much trouble.
In place of the standard mine loadout (3 @ 1.0m3 each) we convince 2 of the 'bravest' Vargr to don Battledress (a bit tougher for the Captain to find but we'll continue) and climb in the end real nice and cozy fetal 2-man bobsled style (each suited Vargr being about 1.0m3, but you want to give them a weapon bigger than the standard arm mounted laser and sidearm, a MMU, and a bit of wiggle room)
Now screw the lid on real tight and slip it into your loader. The Booster is controlled by the 'pilot' via his suits HUD much like his grav module.
The 'missile(s)' are launched, preferably with other genuine warheads to soften up the target and distract the defensive laser fire.
As the missile salvo nears it's terminal run point and the defensive laser fire, the 'pilot' initiates the tumble, a hard full burn to zero (nearly) the velocity, and punches the self-destruct to create the chaff field which will hide the Vargr and perhaps help the other missiles vs the anti-missile fire. The sudden stop and chaff should insure the Vargr inside are not fired on by the defensive laser (that 'threat' is gone) and the Battledress should be enough to protect the Vargr from the explosives being they are designed to blast outward without harming the normal payload of mines.
The missiles continue to the target and shortly after the Vargr coast in on their MMU's and go to work.
The Trader Captain thinks he's getting off lucky with just one light missile salvo and continues to delay the Vargr Captain (who is demanding his surrender but no longer firing at him), promising whatever if the Pirate insures his crew and passengers safety.
... Meanwhile the picked squad of Vargr in Battledress is forcing an airlock, or shutter on some stateroom viewport. The first inkling of trouble for the Trader Captain are the explosive decompression alarms...
Heh, it may not work for a hundred RL reasons but depending how real science vs space opera your game is it could be valid IYTU. It sounds very evil to me, but I like it
Lets see how it shakes out here and maybe I'll have to use it in my next campaign muhahaha...
I just hope my current GM doesn't see this and use it on us
I think RabidVargr might even like this version, maybe I'm out of the doghouse in his books now
In some circumstances the Vargr might not even need to self destruct the Booster, instead just popping the nose cone once they match vectors and one of the 'crew' could climb out while the other stays 'aboard' to pilot the Booster back to the ship.
If it's as slick as presented I can even see some special ops forces using it. Merc's or Marines might find it useful in certain circumstances.
Anyway, comments? (like... Are you as mad as that RabidVargr?)