first off, congratulations on 500 posts andrsn..
secondly, i use to get terrible foot cramps when doing just about anything (running, biking(until i got biking shoes), swimming with and without fins...you get the idea)
anyway, i started using the calve press at the gym, the first few times i didnt feel anything(not enough weight) once i got the proper weight, i felt the same cramps(as i feel doing other stuff) in my foot, this only happened the first time i got the weight right, after that, i increase the weight by 20 lbs a week, no problem, no more foot cramps EVER, i havent had a foot cramp for about 7 months
thirdly, i dont believe in supplements, i think that in a balanced diet everything you need is there (then again, im just a kid, and nurtition isnt my strong suit), now if i dont eat a balanced diet, then i just wont get everything i need, oh well,
most of the people i race with take supplements, creatine, some really weird stuff(dont know what it is but its like a lesser version of creatin), some other people take alot of vitamins and other stuff, and they think they can just eat bad after that, their loss i guess
thats my 2 cents