stock based comp/modeling out 5Y

now to the SOCF. I like putting this one together a lot, but there are always some line items in the CFO area that mess with me stock based comp is an add back to net which leads to higher CFO. but what is the best way to model out this comp going forward??? I took a blend of the last 2 years and straight lined it for the next 5 years but this feels wrong. talk to me guys, i need some real good model cats to start posting. sell siders, esp. modeling is probably the best part about this business, since you can never get too good