I've got one of those lazy "Ididntexerciseinalongtime" heels which is causing improper form on my squats. I've spoken to some knowledgeable fellas at my gym and they pinpointed my weakness in my squat form is my heels and their inability to flex when coming down (they lift up).
My stats are 5foot9 (175cm) I'm 80kgs, 28 years old and as I first said, I haven't done a lot of exercising for a good 5 years.
My personal trainer told me to stick some 5kg plates under my heels which has helped tremendously on my squat form, but I shouldn't and don't want to rely on doing my squats forever this way. He also gave me some stretching tips to try and gain some flexibility into my heels, which were doing free weight squats at home and squatting as low as I can go while maintaining my heel to the ground with both legs in uniform (1 leg in front of the other).
I'm squatting 80kgs easily, to the point that I need to lift a heavier weight, but it'd be pointless to squat heavier with a crappy form (even with a mediocre form using the plates, I'm a bit worried I'll damage my knees). Specifically doing back squats, although I am practising front squats for power clean form.
Is there any other exercises or something I can do to gain some more flexibility in my heels?
[edit 29/03/2011] Added Youtube links showing me doing my squat
My bad on the recording them wrong way round (I wasn't filming obviously! ;).