Hi BottleBoy,

Profit on Turnover is quite easy to calculate. Let's assume you've had 100 bets at $10 each... Your turnover is $1,000. Let's then say that you have actually returned $1,100 from those bets, so your profit is $100.

Profit on turnover is Profit * 100 / Turnover, so

POT = 100 * 100 / 1000 = 10%.

Return on Investment is similar, except you need to determine what your "investment" is. I have seen a number of people define the investment in a number of different ways. Personally, I would steer clear of ROI, and just consider POT.

Cheers,
Chris.