I have had very little success finding Forums in Portugal. Some of this is my limited Portuguese, but there is also a very different
internet usage and presence in Portugal.
A straightforward search for "BBQ Forum" or "fórum de churrasco" nets you none. Many businesses do not maintain a website because their is a cost and they instead opt only for the "free" Facebook.
Other than ads for fishing trips, there is not a ton but it is better than sailing. But not much.
Like many things in Portugal, progress is made by who you know. I found vastly more
local information in Viana do Castelo from a shop, Loja do Jaime...who is only on facebook (something I refuse to use). If you walk in the shop they are thrilled to share information.
Honestly, even getting businesses to RESPOND to emails can be a major issue. This is a constant struggle. I am trying to buy a nearby moorage in Spain and you would think I am trying to murder their mother. They WILL NOT respond, make excuses when I call, then continue to not respond.
You would think the 6000-15,000 euros would be a motivator, but no.