Alex,

I use a couple of hydraulic bottle jacks with 4”x4” wooden blocks on the keel to lift the boat a couple of inches.  As the boat rises off the bunks, wedge pieces of wood in between the hull and the bunks.  This will prevent the hull from rolling to port or starboard.  When the hull is a couple inches off the bunks, install wooden blocks or jack stands to back up the jacks.  Then cover the bunks with plastic sheet and paint the hull.   After the paint dries, you will have to slightly jack up up the hull again.  Then, move the wooden blocks so you can paint the hull under them.  It can be done in one afternoon.  Just be careful to not place any part of your body under the boat when it not secured by wooden blocks or jack stands.

Roger Pihlaja 
S/V Dynamic Equilibrium 

Sent from my iPhone

> On Mar 16, 2021, at 8:55 PM, S/V Lark <Colealexander at hotmail.com> wrote:
> 
> ?Perfect.    I was worried about Jack placement and hull damage.   Gray looks
> good.
> 
> Alex
> 
> 
> 
> -----
> Alex Cole
> S/V Lark
> --
> Sent from: http://rhodes-22.1065344.n5.nabble.com/