Father-and-son training partners Peter and Shaun McKay are taking a realistic approach to their prospects of further success when they return to their favourite track on the middle day of the Wellington Cup carnival. Trentham has been a happy hunting ground for the Matamata duo during their partnership that is now its fourth season, with 13 wins at a 20 percent strike-rate in their overall tally of 38 wins. Their highlight together was Wolfgang’s (NZ) (Puccini) double last season in the Gr.3 NZCIS Wellington Cup (3200m) and New Zealand St…