What can one do? I also hate the fact that my new camera has no viewfinder. (it's called progress)
I made a hood for mine from card and black tape. I increased the brightness of the screen and, with the hood, I get decent views.
An alternative is to use a small monitor connected to the composite out of the camera. Locate reversed on the camera shoe and make or buy a conical hood with a viewfinder eyepiece to fit the screen.
I have a JVC GZ-EX215WEK with an LCD screen no viewfinder which I was used to . In sunlight I get poor picture plus reflection. I have tried a hood with no success. i have seen extension viewfinders with magnetic attachment but one review said it demagnetised the automatic fovcus???.and they seem to be camera specific. I cant find one specific to my camera. Can anyone help please