bag 58 back into a pool positioned within collar 70 is buoyant flotation material 90 depicted in fig3 5 as an annular piece of foam material 90 need not be so shaped or positioned however and may comprise buoyant elements other than foam if desired preferably however material 90 is fixed within collar 70 so that its position relative to body 14 does not change even if cleaner 10 changes its orientation within a pool such position fixing is especially advantageous when cleaner 10 climbs a side wall of a pool in particular as compared to cleaners in which flotation material is positioned within the filter bag and thus can move as the bag moves or because of its buoyancy can cause the bag to move cleaner 10 reduces the likelihood that bag 58 will undesirably tend to float to the surface of the pool as the cleaner 10 climbs a wall fig6 11 illustrate aspects of disc 26 of the present invention disc 26 includes upper surface 94 and underside 98 as depicted disc 26 is generally annular with generally circular chamfered periphery 102 and defining circular central aperture 106 although applicants presently prefer such annular shape for disc 26 it need not necessarily be so shaped disc 26 is adapted to be received by body 14 see e g fig3 and to abut footpad 22 alternatively disc 26 may be received by the footpad 22 incorporated into disc 26 are series of through holes 110 and multiple curved slits 114 holes 110 function similar to the immediate apertures of the rice 39 995 patent rather than being sized identically however holes 110 preferably are of differing diameters indeed most preferably holes 110 increase in size from periphery 102 toward central aperture 106 holes 110 need not necessarily.