Jim,,Device was a SE Sport High Preformance Hydrofoil---purchased at Bass Pro Shops---49.99>59.99 depending on size. For my use they work as good as trim tabs on my twin 40's.
FYI: I'm still in the Nashville area with Byrdman,,,probably going to start north again Wed. or Thurs. AM depending on the weather. After sitting through that tornado watch last week here at his Mom's house our WNY snowstorms don't look bad at all!
Terry