What might be the advantages (disadvantages ?) of a full under engine tray ? Better airflow to drag hot air away from the engine = better cooling ? Better airflow for less drag around the baulkhead = more aerodynamic ? Keeps engine bay cleaner ? Protects sump and accessories from knocks, stones etc ? Looks better ? In what material ? Plastic ? Fibre-glass ? Metal ? Obviously quick and easy to take off for servicing etc. perhaps with certain cut-outs ? Mounting where and how ? Mounting points susceptible to rust ? What do you think ?