Units? Based on the amount of edge you have. However I personally will avoid tracking games with little edge (below 1%).
Example:
Game: Oklahoma vs. Stanford
Pinny Line: OU -10 (-122)
SIA Line: OU -10 (-110)
Edge: 2.51%
Pick: Oklahoma 2H (regardless of the line and juice) for 2.51 units
You can use the Half Point Calculator to figure out the edge. Type in Pinny as the default and SIA in the area below with the projected lines.
https://www.sbrforum.com/Betting+Tools/Half+Point+Calculator.aspx
I will track each individual sports result in this thread.