If you have made it 7 months without a crate, then crate training is up to you.
I crate train all of my foster dogs. Some are puppies, and others are up in years.
As our dogs go from being a tiny puppy, to a few months old. They require more mental, and physical exercise. It's tough for them to sleep, if they are not tired. Plus Vizslas are creatures of habit. It doesn't take long for a unwanted behavior, to become a daily thing, if not stopped right away.
I would do more with him during the day. Keep him up a little later in the evening. When you go to bed, have him go to his bed. Don't leave him on the sofa.
Not all those who wander are lost.
Life is just a leap of faith.
Spread your arms and hold your breath and always trust your cape.
Two things define you. Your patience when you have nothing, and your attitude when you have everything.