Karl from The Canvas Works.
Can recommend him highly, he has done a lot of work for me privately and through work. Listens to what you want and has good advice.
https://www.thecanvasworks.co.nz/
Best to go direct, you need to speak to a guy called Adam Wickes and he does all the custom stuff.
He will come and pattern your boat, send patterns away then it gets drawn up and cut on a router.
It is ultralon foam, a lot of race boats are fitting it in their cockpits.
https://www.ultralonfoam.com/products/u-dek-deck-treads
Cool product, we install this on boats at work fur customers and you can customise it however you want
They are pretty good, make sure you get the external antenna.
Good feature is you can set it up to send position reports to a desired phone # at whatever intervals you desire.
https://www.absolutemarine.co.nz/stanchion-s-s-600mm
No base welded on so not much to go wrong, Booboo and Damon used these and had their own base laser cut and welded