Ok, although I have had my exit dates planned in advance, I have now decided to treat seasonality as prospecting and not rigid entry-/exit-dates. Thus, apply some common sense derived from trading stocks many years to the spread trades.
It's particularly what's been going on with NG and RB in the last couple of days which has prompted this, as so much profit has been given back. I guess I actually had to work through some of these ups and downs to get this realisation, although in hindsight it should have been clear from the start. Fixed dates, particularly for exits, should used be used as indication on how long the seasonality works (on average) - and not be followed religiously.
Thus, I've exited one of my NG trades today. It was a huge mistake to have two NG trades simultanously, especially since they were so correllated (both had Dec 07 as the long leg).
Bought 1 Jul 07 NG Natural Gas, Sold 1 Dec 07 NG Natural Gas @ 1.835 - CLOSED - PROFIT 0.245 or 2.450 usd.
The maximum open profit was about 1.000 usd higher. In my plans, the trade was to be exited on Monday - June 25th, and the gap up in the spread today was a good selling opportunity after the drop yesterday (which I got hit with twice; the drawdown on the new NG position is currently around 1.200 usd).
Bottom line is: I'll be a bit more careful about buying tops, and I'll look to take partial profits when (if?) I fund the account with a more serious amount of money.
Other than that, the Oats/Corn trades are going well, the Soybean/Meal/Oil stuff is working pretty well, and I'm currently offering my RB position in the market
After July 1st, I'll do a big writeup of all positions, closed trades, open profits/losses, return on margin etc etc. I'll update that every 1st of the month from then on.