I got a Hammerhead box at the hobby store and a Skyray bitz from Battlewagon. I Magnetized the targeting array and burst cannon for the nose section and the turret mount for the tank weapons. The Magnets are the cheap one dollar block magnets from a hardware store. Since I order the Skyray as a Bitz I have two turrets. This means on a single D'Fish body I can run any option. The Drones I also had to provide and I made a pair of Burst cannons. Without the Skyray Bitz it still makes for either a D'fish or a Tank, which is what this is about.
I just bought cheap bar magnets at the hardware store and broken them into pieces to glue in. I made sure to play around with each pair and find the proper polarity alignment first, then painted one side yellow. Then I made sure, using the yellow, that my broken bitz matched. I broke them gently with a hammer.
Painted side of bar magnets
I used the Burst Cannon and Tank Target Array to start. I tried to use what was there so I used the swivel mounts as a guide. On the Burst Cannon, I carved away the top portion of what goes inside the nose turret but used the bottom plastic to square up the magnet with the attachment. Notice the BC is really upside down so you can see the portion I left to work with. I also used the part I carved out plus some sprue to make the backing for the target array so it fit deep enough in the nose turret.
From here I aligned this piece in the nose turret. The nose turret required that I make a small plastic shelf to get the alignment correct and the ion cannon required a few sprue sections to build up the hollow chamber. I did not photograph it but kep in mind that I aligned this along a wall of the mag, not the bottom or top or back. It was easier to work with on the side of the attachments because I could align the array in place, then glue in the mag and it is aligned.
You can see the wall of the magnete in black on the inserts. The Burst Cannon and Tank Target Array with magnetized ends.
For the Tank(not skyray) Turret I glued in the post, then shaved down the top and glued a magete half on it. I glued one piece onto the turret post and a matching piece inside the weapon system. The Railcannon was easy but the Ion Cannon required a large build up of scrap plastic on the roof to bring the magnete half down to meet the post and keep the cannon high enough.
So here is what you can do with a tank box all in one layout.
A D'Fish only requires a simple hatch so as long as you don't glue it into the tank turret you are fine. You can switch off the nose back to BC and pop out the turret hatch and stick it in, and all you need then is Drones. I made some BC drones. I combined a Gothic space ship bitz with a chopped up burst cannon and a section of carbine (and a drone body) to make these.
But, since you have a magnatized turret top post, why not make a Locating Beacon for a Pathfish? I Did!
I just used some bitz and sheet styrene.
I now have a Skyray, a Tank, and a D'Fish, set up for pathfinders all in one model.