Hello everyone,
In this case I will share with you the process of magnetizing a flying base of a Piranha Light Skimmer
1. Remove the thin top part of the flying base and smooth it using a file.

By
nickfun at 2011-07-16
2. Drill 2 holes, one next to the other, on the belly of the skimmer using drill bits of the same diameter as the magnets which are going to be used. Here, I use a 4mmx2mm and a 3mmx2mm (drill bits 4mm & 3mm)

By
nickfun at 2011-07-16
3. Secure magnets at the drilled holes with superglue.

By
nickfun at 2011-07-16
4. On a plastic card of 1mm thickness drill holes using drill bits with diameter equal to the diameter of the magnets used (4mm&3mm). Then, remove the drilled holes taking care that they are surrounded by sufficient amount of plastic.

By
nickfun at 2011-07-16

By
nickfun at 2011-07-16
5. Glue the magnets on the holes prepared at the previous step using superglue. Magnets used: 4mmx1mm and 3mmx1mm

By
nickfun at 2011-07-16
6. Place the glued magnets of step 5 on the magnets of the belly. From 1mm thickness plastic card cut a piece large enough to cover both magnets and the part of the plastic card which surrounds them. Glue it with plastic glue.

By
nickfun at 2011-07-16

By
nickfun at 2011-07-16
7. From 0.25 thickness plastic card cut a strip of 1mm height and 10mm length and glue it to the uppermost spot of the flying base forming a spiral. At this point, we have full control of the angulation of the level that the skimmer will be hovering, so a test is advisable.

By
nickfun at 2011-07-16

By
nickfun at 2011-07-16

By
nickfun at 2011-07-16
8. Using plastic glue, glue the flying base at the area of the spiral with the construction of step 6.

By
nickfun at 2011-07-16

By
nickfun at 2011-07-16
9. Remove the excess of plastic around the magnets of the bases. I did it using a power tool but it can be achieved with a blade and files.

By
nickfun at 2011-07-17
That's it. More time takes for the glue to dry than the execution of the steps.

By
nickfun at 2011-07-17
The modification of the base can be even less visible by filing down the excess plastic more or by painting it a darker color or same as the skimmer.
From my experience flying bases were a nightmare before the above modification. After my second battle, the thin tip at the top of the base broke and remained stuck at the socket of the vehicles belly and this happened with almost all my Devilfishes and Hammerheads. Furthermore, if there was not a tight fit between the base and the socket, the vehicle used to spin or the base was left at the point were your Hammerhead was at the start of the movement phase!
Thank all Ethereals, all of the above is history. Hope the present article offers some help.
Regards,
Nickfun