OConnor 1040 Fluid Head + flowtech 100 Tripod System (Handle + Case)
$500/day$1,500/wk

Four rubber-coated neodymium magnets on an aluminium platform — several hundred pounds of combined pull force on steel, with 1/4-20 and 3/8-16 threads on top for a head, gimbal or camera.
Cameras on cars and steel — driving plates, hood mounts, wheel-well angles and industrial rigs without suction anxiety. Four serious magnets, one platform.
Clean the panel, seat all four magnets flat, and ALWAYS run a safety cable to something structural.