If shes old,overweight and likes to go slow ----poledancing is the go.

Yeah, you should know by now Im just stirring.
Let her do which ever makes her happy and lets you get on the water the most.
If you get her into either sport that requires wind,
she wont try and make you go for a pick nick in the country when its blowen 30knots, instead she will be dragging you down the beach.
But if she is inflatable as KOTP said,
Dont take her outside in 30 knot winds, if you lose your grip on her you may never see her again.