Thoughts on PropSpeed?

I was comparing the zinc spray to Pettitt prop coat. I have never tried Prop Speed.

Only thing I can say is my last short haul for cleaning was late last August. My first run after wintering in the water had no loss of speed or vibration. I can only assume running gear fouling is minimum.

Tried PropSpeed a year ago.
Worked good for a while, but ridiculously expensive.
Will try the Petit spray coating now.

Tuned and balanced spare prop

3rd coat going on shortly..

Called the Petit Customer Service: The coating should last 12-18 months he said. We shall see, lots of shallow waters in Florida with silt and sand always mixed in when running Biscayne Bay and the Keys.
Got a diver booked for Wednesday, going rate is $10 per inch of prop for swapping, does that sound right?
Full report to follow in 18 months, stay tuned.

I've had the Pettit Prop Coat on my props about 15 months. Diver came first time since November 2018 and had no growth on the props of course water was cooler. So far very satisfied with this product. I try to run the boat every 12 days and do it most of the time and this helps a lot to keeping everything pretty clean.

Good news, thx.
I run my boat once a week, come hell or high water, it should work good then.
Question: Do you grow slime on the prop with this stuff? Does it hold up to underwater cleaning, as in a diver scraping with a metal blade? (The factory rep assured me it cures to a hard coating and won’t rub off when running the prop @ 1700-2000 rpm 200 hours per year.)
We shall see, not too impressed with PropSpeed, big money, looked good initially, now gone and growing barnacles on trim tabs and rudder, $800 for the yard applied coating, this spray stuff cost me $26 and promised better performance. (Prop only for now, rudder and trim tabs next haul out, 2 more spray cans, $78 total. Sounds too good to be true, 10% of PropSpeed)

Norseman,
I've had no slime issues. Yes it holds up well not sure a metal blade is necessary but using a plastic scrapper is all my diver uses. It doesn't rub off unless your prop gets in sand. I had 2 coats put on all the running gear & trim tabs. If I remember it took about 7-8 cans.

Ok, good news.
Thx

Heard several coats of Rustoleum cold galvanizing with 93% zinc works well and cost much less without the "Marine" label . +2 on running the boat often.

This one?
Yes, cheaper but thought I would try Petit first, they are the grandmother of antifouling, $14 more for a Petit spray can is probably a good investment, if not, I will do Rust-Oleum next time.
(Or one of you guys with a twin boat use each product on each prop, then compare 18 months later..)

Wow. Here's a pic of one of the shafts 7 weeks after prop speed. This is from a couple of weeks ago. It came off easily but I was shocked at the amount of growth after a fresh bottom job. I may get off the prop speed train the next time. I think I've been saying that for about 5 years now.

Your right Petit makes great antifouling paints. From what I've read Petit is basically the same thing, high zinc content spray paint. This is not antifouling as we know it, it is zinc which erodes over time acting like an ablative paint. Same for rudder and shaft zincs, no barnacles or growth.

I to have had very mixed results with prop speed but keep having it applied. The yard put Petit on in January and dove on it a couple of weeks ago and was still clean. That is with a diver once every 3 months.

Paint did not really harden and not sticking to the metal as advertised. Let it dry in the garage 15 hours, then used a piece of dry paper towel this morning to carefully wipe the dust off, and the paint comes off like the skin of a rotten apple.
Possible classic case of me spraying on too many coats, or too thick coats.
Prep was careful with an acetone wash.
Doubt I will put this prop on if the paint is not hard as rock tomorrow.