Located in Ontario, Canada. I want to extend the Privacy fencing https://imgur.com/a/esBAm1Y along my my deck. I found this product https://www.homedepot.ca/product/hoft-kit-a6-one-72-in-end-post-black-hardware/1001541298 , 3×3 metal posts that can be bolted down and you can insert boards to create a fence.
My question is: can I simply cut down the fence posts already in the ground to the level of the deck and install these posts directly to the deck for creating a privacy fence? The wooden posts would still be there for structure for the deck.