Trim Tabs?

[97fxdwg]

Zodiac/Avon/Caribe/Dinghy/Rib Inflatable Boat Trim Tabs - eBay (item 120571451189 end time May-30-10 18:00:24 PDT)

Anyone ever used these? Are they worth the money and hassle? Sounds like less HP needed to get up on step and that could be very nice. Anyone?
Thanks-
AJ in AK

[speciald@ocens.]

I use Dolphins on the cavitation plate of the outboard. Work well; probably cheaper (abot $80).