I was at -2C air temp a couple of days ago; winter is coming here, so the sea will be frozen anytime now, partly already did, so I needed to change the launching spot. For me the Rip Curl flashbomb 5/3mm lobsters are the best ones, eventhough there is some neopren between your hands and the wing handles, it still works ok.
Funny or actually not so funny thing was that my Unit 5m's both valves were covered with ice, and eventhough I have a van, fully inflated 5m won't fit in! So needed to melt with my not so warm bare hands the caps to get them opened.