That's a lot more than what I would call a DING! Prop-shops can make that
look new again. As for your skiing issue with only 90hp the only suggestion
I have is to drop pitch size down and watch your WOT RPM. 4 blades may help
but you may have issues getting the RPM to increase fast enough on take off
so the engine will not bog down.

"Gregory McGuire" wrote in message
...
Hello experienced boaters,

I have had my boat for a month now and out 4 times with it. The prop which
came with the boat has a ding in it, (had the ding when I got it.) I need
good advice on a new prop and maybe- maybe there is a deal out there for
new
prop.
Or should I get my prop reconditioned by a prop shop. I live in the san
francisco bay area is there a prop shop nearby.
I have been using the boat for water skiing, and truthfully I am barely
able
to get up on a single.
I weigh in at 165-170 currently.
There is this prop advertized on the internet he
http://www.piranhapropellers.com/PropDesign.htm
Actually it looks like a great invention.
Anybody ever used a piranha prop before - think this thing is any good?
Here is a picture of my prop with ding: 238924 bytes
http://users.rcn.com/neptunium/boat/prop.jpg
Here is evidence of cavitation eating away the metal of the prop 241514
bytes
http://users.rcn.com/neptunium/boat/prop1.jpg
Can an aluminum prop be repaired that has cavitation damage? And still run
good?

Advice on how to buy a prop? does the nada guides describe the boat with
the
motor as a combined weight, or the boat with no motor - then add weight of
outboard motor.
boat is 1975 bayliner mutiny: nada guides says 900 lbs
engine is '85 90HP mercury: inline 6 = about 300 lbs

Greg