We have some variable sized fiber optic strands which are going into the grotto for a Star field effect. The strands are in a covered cable. Once we strip back the covering, the strands get pulled into the grotto area before gunnite (see YouTube video on this). We hope to bundle them and weight them during the gunnite spray to keep them from disappearing into the gunnite. My question is: Can the strands pass on top of the grotto jump rock’s framing/rebar and poke down then be buried on top by gunnite or will they break? I’m also concerned about the additional weight added to the top by people standing on it. I feel that the strands should be fed through the center of the rebar structure to keep the weight of the gunnite off of them. Does anyone have experience installing fiber optic strands in the grotto? I’m thinking of trying to reach the “Ask Pool Guy” who posted the video, but I’m not sure how to find him.