I've used my 18" (no heat shield) on my deck and grass and have never had any problems. my 22" has the heat shield and it is effective in lowering the temp below the cooker but unless your going to be cooking on thin ice it really doesn't seem all that necessary.
00 Slowskys Racing
CharGriller Acorn Komado AKA Milton
(RIP), WGA, WSM 18.5", WSM 22.5" BBQ Guru Digi Q, Weber Kettles, Genisis Gold Gasser, Orange and Red ThermaPens and a Partridge in a Avocado tree.
Agent 000 (Double O Zero
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