If pilots out there do not want to have a mid-air with a fast Cirrus (and there are a lot of us around now) then please leave your transponders on!!!
Alternatively the Cirrus could slow down to a reasonable speed in the vicinity of the airport and you could both look out the window
Much as Valenii has a point, there is, as always, two sides to the coin:
Busy circuit, everyone squawking, many of the aircraft have no mode 'C'. Take this to be at any airfield outside CAS.
Now adjacent radar unit is working an aircraft under RAS which wants to route via this airfields overhead. This aircraft can be anywhere between FL50 and FL245. The airfield is far enough away that you can't see the primary returns, but because you can see the copious, garbling, SSR readout's, including lots of 'NMC' indications (no mode Charlie) then you have to give avoiding action on traffic which my be 20,000ft below.
If you're arriving then fine, leave the transponder on until landing. Don't have a problem with that as it's SOP for most people. However - if you're going into the circuit consider whether you actually need it on. 99% of the time the answer will be no.