One of my Christmas presents was an analysis of my swimming at TriCentral in Manchester. I'm currently preparing myself for this treat - psychologically and physically!
I'm swimming about three or four times a week and my freestyle is improving. This time last year I could swim breaststroke powerfully over long(ish) distances but I certainly didn't have the stamina for freestyle which I've built up over the last nine months.
I like this teaching gadget for focusing on the different components of the stroke. I find watching it quite hypnotic and restful - ideal for armchair swimmers!