I wouldn't take too much notice of what failed sports investment fund Centaur did
If you read back thru your posts you'll probably see you've answered your own question, especially if you
don't feel comfortable doing something. You've a 'great strategy' and been doing it for over 4 years I'm guessing successfully, you must realise by now your profitability doesn't rest on those odd occasions you're exposing yourself to a large % of your 'portfolio'.
Personally I've never really gone with this portfolio stuff , if you're doing this full time you've generally got a lot more squirreled away than what's in your account balance. If things go tits up it's usually just a case of depositing more or if working just a case of saving up a new bank.