Probably depends on how you sparge.
If you fly sparge, I would hardpipe it. I have a stainless steel false bottom, and before I built my stand I would accidently flip the false bottom when pouring in 6 gallons of sparge water at once, LOL. so I hard piped it, used some copper and an elbow fitting forced into a compression fitting bulkhead (http://brewhardware.com/valves/59-weldless-bulkhead
Oh the hole for the false bottom was too big so I slipped one of the extra silicone o-rings bobby sends in his kit over the pipe. Doesn't move, and I can attest to it because I mix my mash with a clay mixer. Gets 8 gallons of mash water combined with 24lbs of grain to a vortext, lol.
If you batch sparge, throw something heavy and stainless on it, or if you want to go overboard you can drill into the bottom of the color to secure it, but it would be a pain. Hard plumbing is nice because i don't have to go dumpster diving everytime I dump my grain into the trash and forget the false bottom was down there.