What lake is this (think I asked that a long time ago)? How long was the dive. At 10C I usually did a 15-20 minute swim in N. Florida in winter. Years before that I'd chop a hole in the ice up at Paint Lake near Thompson for a quick in & out.
The lake pictured is actually West Hawk Lake at the dedicated diving bay (Government sanctioned buoys in place mid May to late fall). Not where we did the dive but a better picture of the kilt. No postable pics of the 100th as my buddy was also nude and she's in most of the pics... not mine to share.
The 100th dive happened at my cottage just on the other side of the MB/ON border. We did a proper "20@20" dive.