Okay, I think it sounded simple, but It's not working: powered magnetizer, directly powered by a working batbox, iron shoes,and an iron pole. Only I'm not flung upwards...
must the pole be 20 tall? or can it be shorter?
EDIT: Restarted world, works like a champ 
I had the same problem. 10-long Iron Fence pole with powered Magnetizer above. No upward acceleration despite Iron Boots. Total destruction/recreating changed nothing.
Created new world, TMI'ed resources, rebuilt _same_ design- worked well. Gone back to test world - old installation worked well (without any changes except Save/Load).
Probably a slight issue regarding how the Magnetizer registers to the EnergyNet. Will take a look into it.
