when the OP was asking for opinions..... he said outdoor shows, NOT in a TENT with controlled hazing / lighting, in that situation, then yes, 5 watt yag is plenty.
but OUTDOOR Show is OUTDOOR show,, now your little 5 watt OPSL is working against, ambient lighting / intelligent lighting / etc. , then you have to figure out a way to control smoke/ haze outdoors.....
so yea, forget about doing OUTDOOR show with 5 watts, unless its just static beams.
On a side note:
if 5 watts is enough for outdoors,, then whats with all these 20-40watt vajayjay burners, that the big laser guns use ??
RGB laser projectors
Pangolin Beyond .NET
APC40 Midi controllers
Pangolin FB3 controllers
DZ splitter
LS MegaWatt Green Machine