They slide easily, so even a 5mm magnet on a stick will probably do it easily although ours were bigger, maybe 8mm-10mm. Clothes pegs are pretty handy for gripping/holding the 'stick' in the raised position too....
2012 G56 Stage 2 M3W 2007 Fiat Panda 100HP 1998 Lotus Elise (Cosworth Duratec) 1988 RF88 Van Diemen
