scrubbing posts with a concrete platform - safe for an encapsulated keel?

[PlankWalker]

I've bean putting my 36 ft encapsulated keeler onto a concreet scrubing grid for the last 17 years, usually I dont feel it touch.
About 5 years ago it banged quite hard for about 5 minuites in a strong Easterly, which was very worying, but on inspection after it dried, there was no damage at all.
I have herd of people putting timber down and weighing it with chain, old anchors , or concrete blocks, but once its under water you dont know where its moved to and it could be a disaster waiting for you to settle onto!
My advice is to keep it simple.

Plank

 

[Tranona]

Maybe strange but more likely a bit paranoid.... Posts with a sand or silt base spread the load across the keel but concrete might result in more of a point or linear load with more pressure on a smaller area of the keel

In my experience the concrete is usually smooth and level. Better than soft bottoms where you have no idea what is buried in it. Our club slipway is concrete with a high drying wall and has been used for drying out for 30 years or so and don't recall anybody having damage.

You are perhaps right - paranoia is setting in!

 

[westhinder]

Maybe strange but more likely a bit paranoid.... Posts with a sand or silt base spread the load across the keel but concrete might result in more of a point or linear load with more pressure on a smaller area of the keel

Never had a problem in the 11 years I had my Rival 34, nor, by the looks of it, in the 11 years with the original owner.
As someone else mentioned, when the boat is ashore, it normally rests on two woorden blocks without any problems.

 

[MonniotC]

How will you stop them floating away?

Mass.

Seaman's Prayer?