my query is whether running/check side widens/narrows the natural angle of the cue ball after impact with the object ball or whether it is only after contact with the cushion that this happens? After respot on all balls from baulk area I can play standard long losing hazard using half ball contact no side or I can play same shot by placing cue ball more centrally in D and using side. I try to avoid using side but some shots (eg short/long jennys) using side is just about mandatory.