This is what the locals call "waist high" in Portugal!
I took my Omni to Portugal & Spain recently on a trip whose purpose admittedly was mainly sightseeing. But I did begin to wade into a waist-high beach break which was offering the occasional tapering shoulder, only to be whistled back by a life guard who told me, ‘no surf vehicles due to strong side shore current’. But I was welcome to body surf! Apart for some 1 footers on Portugal’s southern coast that was the only time my mat touched the ocean .