Originally Posted by
noblues
my view is it has no place in GA.
I've found the Mk1 Eyeball system very reliable for GA VFR that requires zero investment and is by default carried on board every flying machine.
TCAS saved me a head on collision flying back from Milton Keynes to Wycombe in the evening sun.
And good lookout saved me a collision with someone merrily joining base the other day without a single radio call (different airfield).
You're right, good lookout is paramount. Also that TCAS has flaws and isn't ideal for GA in dense traffic. But for me it was a lifesaver.