I always groundcast when fishing and have used quite a few different types of bait clip. You'll have problems with them all unless, as Waco says, you lay your line out carefully. Always try to keep the line taught.
As for grippers, not a problem on sand. For hard surfaces I bend the last 10mm or so of the grip wire back in towards the lead not quite making a 90deg bend. Find that this helps the wires to more or less skid across the surface rather than the point of the wire catching onto something and springing open.