I have a small backyard w/ 2 watering zones currently. We are adding 500 sq ft of patio, and need to remove 5 or 6 sprinklers which come equally from both zones(3 each). I'd like to just cap each one off where the EZ hose connects at the elbow under the sprinkler head, or if necessary I can dig a bit more and cap at the PVC. The remaining sprinklers will easily handle our watering needs once the patio is poured. Is there any problem w/ doing this as opposed to hiring someone to relocate all the ...