I noticed the Portland Timbers in the MLS release large amounts green smoke after they score from mock up tree trunks. This is done by the Club or with their approval. The trunks are slightly away from the crowd.
They also seem to have a dressed up lumberjack who periodically gets out a real chainsaw and saws through a tree trunk which appears to be broadcast on the stadium sound system.
Interesting how attitudes vary with the UK.
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