I usually use either dowels in hinge holes or for fuselages I will use an engine mount holes/nuts to screw in an eyebolt and for the tail end either a hinge hole or tailwheel bolt hole with a small eyebolt again. The last plane I painted was a coveral covered 33% laser, and I used eyebolts throughout for hanging to spray up. I always start with attention to the area around my eyebolts to ensure no weak spots from shadowing of the eyebolts, and then spray as needed.