Does anyone have any tips on the proper procedure for inspecting a roof system that has the straps and top cord of the trusses covered by foam insulation?
Rip it off, or you gotta go with unknown/undetermined. The form is pretty specific and requires photos of nail pattern & clips/straps. So if you cant see it, how would you photograph it.
Is it insulation or foam adhesive? If its adhesive (with docs), it counts as © for deck nailing. If the strap is obscured, check “other” with comments.
Have the owner remove some to determine nail spacing ,etc.(or do it for them and you will be a hero). As far as roof to wall go through the soffitvent or call me and I will tell you some other ways.
Sofits can be the easist part to remove. I run into these every so often. 
And that’s why you’re doing well merry christmas jay
Merry Christmas Preston. Wish you and your family a joyous holiday!