A magnet pulls out the clips, and a wooden spoon to skim the dirty stuff.
Flux with beeswax before pouring into muffin tins for ingots. When my dad made sinkers he had a special ladle that poured from the bottom, and all clean molten lead came out. It had a tube built in going to the bottom of the cup.
Heat the ladle before you stick it in the lead pot or you will get a nasty surprise.
HM