If you want to make snowman rigs you are best to learn to tie rigs,
all you need to learn is the knotless knot, there is some good diagrams on here do a search, its very easy, snowman bait i would suggest a 15mm bottom bait with 10mm pop up.
be careful with the lead clip set up, if the tail rubber cant come of to discarge the lead, then it becomes a fixed rig, or death rig, look at getting some inline leads (fox are best)
free running is also very safe and very easy to set up, simple bomb with swivel thread mainline through lead, then a rubber shock bead then rig tied to mainline (swivel) hope this helps