Larry, yes, i could try to program my system trades using wealthlab for example with a bit of patience on my part but the problem is that
(1) my system is not totally automatic (i decide on trades using a visual evaluation of the setups so there is a bit of wiggle room and it's hard to completely program these setups)
(2) my system is still (and probably always will be) evolving
(3) i find excel spreadsheets sufficient to get a rough idea on the results of my system trading over time
...as far as the trade size i decided to utilize only single position trades at either 100% of acct (more reliable ones) or 50% of acct (less reliable ones) when trading in my profunds acct...the reason is that i normally intend to trade for 1 day at a time and i have high confidence in the reliability of my signals..