Mike Phillips
Active member
- Dec 5, 2022
- 51,004
- 6
Best polisher for a boat?
Hi Jeff,
It's hard to tell the exact condition of the boat from the pictures but it looks like there's some level of oxidation taking place.
The best bang for the buck entry level polisher is the Griot’s Garage 6” random orbital polisher. This is an 8mm free spinning, (not gear-driven), random orbital polisher. Compared to similar 8mm free spinning tools, it does the best job of maintaining pad rotation when buffing anything other than flat panels and when buffing out a boat there are a lot of non-flat panel areas to buff.
It will work to remove light oxidation on boats that are slightly neglected. It will work great for machine applying a wax or sealant for boats in new condition.
If a boat is neglected and has medium to heavy oxidation, then you’ll either need a rotary buffer or a FLEX 3401 gear-driven orbital polisher. This is where buffing out a boat can start to get a tick complicated. A rotary buffer has ALL the power you need to remove years of oxidation. The problem (from my point of view), is that rotary buffers will leave holograms in the gel-coat and this makes the gel-coat more prone to oxidize even more in the future because the hologram scratches make the surface MORE OPENED UP.
I have an article about this here,
Holograms in gel-coat boats by Mike Phillips
The FLEX 3401 aka the BEAST is a gear-driven 8mm orbital polisher and it has a LOT of power like the rotary buffer but won't leave the hologram scratches in the gel-coat like the rotary buffer will. The thing about the FLEX 3401 is it cost quite a bit more than the entry level Griot's polisher.
Here's the Griot's
Get the Griot's Garage 6" DA Orbital Polisher. This one,
Griot's Garage 6" ROP - Standard cord
Griots Garage 6 Inch Heavy Duty Random Orbital Polisher - HD Cord - 25' Heavy Duty Cord already pre-wired
Here's the FLEX 3401
Flex XC 3401 VRG Dual Action Orbital Polisher
I'll let you decide which direction you want to go for a polisher. No matter which polisher you get, buffing out boats is a lot of hard work. Feel free to call me to discuss.
1-800-869-3011 x206
As for products, the most practical way to buff out a neglected boat and to also maintain a boat is to use a great one-step cleaner/wax for oxidized gel-coat. The Heavy Cut Cleaner/Wax in our Marine 31 line works great. It will remove oxidation, polish the gel-coat to a high gloss and leave the surface protected. After the initial use, continue to use this product to maintain the boat.
Marine 31 Gel Coat Heavy-Cut Cleaner Wax 32 oz

Hi Jeff,
It's hard to tell the exact condition of the boat from the pictures but it looks like there's some level of oxidation taking place.
The best bang for the buck entry level polisher is the Griot’s Garage 6” random orbital polisher. This is an 8mm free spinning, (not gear-driven), random orbital polisher. Compared to similar 8mm free spinning tools, it does the best job of maintaining pad rotation when buffing anything other than flat panels and when buffing out a boat there are a lot of non-flat panel areas to buff.
It will work to remove light oxidation on boats that are slightly neglected. It will work great for machine applying a wax or sealant for boats in new condition.
If a boat is neglected and has medium to heavy oxidation, then you’ll either need a rotary buffer or a FLEX 3401 gear-driven orbital polisher. This is where buffing out a boat can start to get a tick complicated. A rotary buffer has ALL the power you need to remove years of oxidation. The problem (from my point of view), is that rotary buffers will leave holograms in the gel-coat and this makes the gel-coat more prone to oxidize even more in the future because the hologram scratches make the surface MORE OPENED UP.
I have an article about this here,
Holograms in gel-coat boats by Mike Phillips
The FLEX 3401 aka the BEAST is a gear-driven 8mm orbital polisher and it has a LOT of power like the rotary buffer but won't leave the hologram scratches in the gel-coat like the rotary buffer will. The thing about the FLEX 3401 is it cost quite a bit more than the entry level Griot's polisher.
Here's the Griot's
Get the Griot's Garage 6" DA Orbital Polisher. This one,
Griot's Garage 6" ROP - Standard cord
Griots Garage 6 Inch Heavy Duty Random Orbital Polisher - HD Cord - 25' Heavy Duty Cord already pre-wired

Here's the FLEX 3401
Flex XC 3401 VRG Dual Action Orbital Polisher

I'll let you decide which direction you want to go for a polisher. No matter which polisher you get, buffing out boats is a lot of hard work. Feel free to call me to discuss.
1-800-869-3011 x206
As for products, the most practical way to buff out a neglected boat and to also maintain a boat is to use a great one-step cleaner/wax for oxidized gel-coat. The Heavy Cut Cleaner/Wax in our Marine 31 line works great. It will remove oxidation, polish the gel-coat to a high gloss and leave the surface protected. After the initial use, continue to use this product to maintain the boat.
Marine 31 Gel Coat Heavy-Cut Cleaner Wax 32 oz

