I think it would be a good idea for me, I just don't really know how to go about it!
Charting isn't that hard, as long as you have a consistant wake up time in the morning. You just need to get a Basal Body Thermometer (most drug stores sell them). You can make an account for free at Fertility Friend, and you just input your temperature every morning into the spreadsheet and it graphs it all for you. It's pretty key though to take your temperature at the same time everyday, and to have the thermometer right next to your bed, so it's literally the first thing you do after waking up.
It helps you pinoint when OV is, but you won't know when it was until *after* it's happened. After you get a temp drop and then an increase for three days consecutively, it will tell you what day OV was. If you can use temping along with OPK's you'll have a much more accurate guess as to when OV really happened. Charting is good for long term patterns, and less helpful for a quick answer.