That is a very good point. I sent an email to the previous owner enquiring whether he still had the boot seal. His response was exactly what you adviced. He intentionally did not reinstall the seal as the rust usually start from the seal grommet holes. He actually treated the grommet holes,installed the grommets and painted over them. I looked at it again just now and that was exactly what he did. I may still install a seal though by gluing it in place, as a small section of the bonnet is rubbing against the body work. Mmmm. Or maybe improvise by installing one of those circular cushions bits that you stick under the sofa's feet on the section that is rubbing against the body work. What do you think?
Many thanks!!