Rusty sills?

[highwayman306]

I haven't had a look yet but I have fears that if I take my side skirts off I'm going to be confronted with rusty holes!

Mine is a W reg and 154000 miles, my question is:

What is the likelihood of there being a rust problem?

Have seen a few members mention their problems but I think these cars were older with added skirts...

also, I have no arch liner on front o/s but no rust as of yet...how long before it starts making a show?

Will Krust and underseal do the job if I find any, with the worst case scenario being welding?

Cheers for any help or personal experience on this