The hand demonstrates the importance of playing support doubles. Not a perfect convention, but getting the three card support off you chest before the bidding gets to high gets partner "in the game" earlier.
It is against my religion, when the HCP count is at least) 25-15 in our favor, to allow them to play in an undoubled contract. Pard has denied a 4 card spade suit. Even though I might have to swallow the results---I would double for penalty.