onest non lulz post:
Keeping trading records is only worhtwhile if you review them and instigate a feedback loop so you can learn form your success and mistakes. With that in mind, it is better to have high quality, low quantity information to hand. A series of 200 trades each with 50 variables is not condicuve to streamlining your trading strategy.
Trading without a hypothesis of how markets work, or what kind of behaviour you are trying to capitalise on, is foolhardy. Working on the assumption that you have established some ideas of what your trading approach is, I would suggest making a list of between 3 and 5 things that you can easily make a note of at any particular time you put on a trade. I personally believe it is advantageous to have a combination of simple true/false (or, say, A - E, but rule based) conditions with another line or two on the overall context of the action. The specifics of what you make a note of will be guided by your particular approach to trading.
Another thing I can suggest is making a note each and every time some specified condition happens, for say another 3 - 5 conditions, but do not take a trade off the back of them, just note their occurence.
Then, depending on your trade frequency, you can look over a) the trades you took and look for old patterns, and b) notes you made and look for new patterns.
Keeping a record for your trading is only worth it if you are going to review what you noticed / did, and act upon it to take yourself forward. So, it makes alot of sense only to keep records that are actually use-able.
jmho.
(some other stuff you can do in excel too, specially if on futures, like average time in winner vs average time in loser, or making good stop sizes or whatever, but this is more about "edge maximisation" rahter than "edge generation")
