Who is using an oil deflector under the intake?

The oil deflector is really only stopping the oil that is spinning off the cam. The lifters will still splash oil with there movement as the oil pouring down from the heads get there.

A cool intake on the outside only gets so cool. It’s on the inside is where you want it to be cool. Stopping any radiant heat is a help but only minor. A cool dense air and fuel charge is what your after. This is where the cool can helps as well as the other tricks also come into play. Like sealing the carb to the hood and a fresh air scoop work.