We are getting bids for having our inground gunite pool replastered and we have several long cracks in the plaster. Last summer we had a leak company determine that one crack below the skimmer basket was leaking. We patched all the cracks at the time with A+B putty and the leaking stopped. The replaster companies aren't sure how bad the cracks are but think the gunite is cracked below the plaster. I guess they don't know how bad it is until the plaster is removed? One company said they have the gunite removed down to the dirt at the cracks, (long trenches removed) then rebar and new gunite is filled in before new plaster is applied. Another company said they have someone come fill in the cracks with some kind of adhesive. I spoke with that person who told me their method is superior to cutting a trench in the gunite. I'm not sure which method is better/more permanent. Any advice?