The time has finally come to start getting bids for an i/g remodel in SoCal. The pool is 30+ years old with the original white plaster. In all, it still looks very good. However, there are some cracks in the plaster and a few spots where small sections of plaster have come off. I had my first contractor visit for a bid. He mentioned something I have never heard of. As I mentioned there are some cracks in the plaster. He noted that there could be similar cracks in the underlying gunite (makes sense) which can be determined once the plaster is chipped out. If so, he recommends installing "staples" into the gunite which are essentially u-shaped pieces of rebar applied to keep the gunite cracks from spreading after the new plaster is applied. He said this could add as much as $1500 to the price of the job if deemed necessary. Is this a fairly common issue and is this the right solution?