You shouldn't have a hole shot problem with a 350 in a 22' boat unless; 1
the engine is not running properly, 2 the boat is atypically heavy for a 22'
cuddy, or 3 your expectations for a 22' cuddy cabin hole shot are
unrealistic. The last one being if you want it to stand on it's tail when
you floor it you need a big block :-)

What brand boat? What's your top speed at wot? How long does it take to
get onto plane from a dead stop at wot? Any idea how heavy your boat is?
What's your typical crew and equipment load?

I disagree that whale tails offer any better hole shot than tabs. Both
apply downward force against the water and as a consequence lift the thing
they are bolted to, your boat. How much either does it depends on the
surface area, the angle of attack, and the weight of the boat. The whale
tail is not particularly influenced by the prop because when the outdrive is
trimmed down the prop remains at the same angle as the whale tail. And the
prop outflow is mostly behind the whale tail. The big advantage of trim
tabs is that their position is independent of the prop. And you can run
tabs hard down as long as you want where an outdrive should be trimmed to
the center range for extended runs to avoid increased ujoint wear.

If you have read around the web I suspect you have also come across comments
that suggest whale tails offer the most improvement on underpowered boats
and are less noticable on boats with bigger engines.

"Doug" wrote in message
news
I've read thru past posts, and searched the web. The world seems divided
into
two camps

"trim tabs are a better choice"
"whale tails/foils are cheaper and do more for hole shot"

After reading, it seems there's two types of cavetation plate 'add ons' --
foils
that hydrodynamically lift the stern, and "whale tail" types that use prop
wash.

My boat has trim tabs, but am looking for better hole shot, I've played
around
with props already. before I make holes in my cavetation plate I wanted
to know
if one or the other types of tails are worthwhile and if anyone can sum up
pros/cons between the two.

Lastly - will they really help more than the tabs did for hole shot? The
boat
is a 92 22' cuddy cabin runabout with a single 350ci engine.