There is a video of sumos being used, but obviously with limited goalie skillset, and still being scored on relatively easy.
However, you aren't thinking heavy enough. Manuel Uribe was 1300 pounds and 6'5'', he would have covered nearly the entirety of the net on his side. Have him hold up a blocker and the corner would be covered. Make someone like him and you're unstoppable.
The obvious issue would be getting him to other arenas, but keeping him in the dome and you go 41-0-0 at home.
