Hi There,
This is certainly possible in the report Designer. The easiest way to accomplish this is to edit the existing Estimate Print template, and find the section labelled "DetailReport - "Estimate.EstimateLine.Estimate"'
Clicking on the ellipses beside Filter String will bring up the options you are looking for here. You can set the report to only show Items where the YesNo field is checked.
Let me know if you need any further assistance.
Thanks!
Regards,
Ben