I was thinking of the benefit vs installation time and money. I guess you need a 337, not sure of cost and how long it would take to install.
Yeah, that’s a good question. Yes, STC/337. It involves a new beefy engine mount (which has its own benefits in a crash), the canard which mounts to it, and the elevator portion which involves pushrods and bell-crank. I want to say it’s around $24k, but the shop typically now only takes on full customization projects. Not sure they just take a plane and add a canard anymore these days.
Mine adds the IO-470 Peterson STC too (260hp). They call it a 260 SE. I can take off in 600 ft with about 200lbs from fully loaded. I have done right around 500 ft with just me and 3/4 fuel. Every takeoff is soft field, flaps 20, rotate at 40 kts.
Short field approach is 55kts. Very flat angle of attack (“deck angle” as they say).
Vso is 35 kts. It just mushes, no nose-over.
Worth it? Matter of opinion. I bought mine 3 years ago; Built in the late 1980s. My one motivator to buy the Peterson modded planes was that if I had to screw up an off field engine out, I would hit stuff at much lower speed than other planes.
The King Katmai is 300 hp, and the wing extensions put Vso at 32kts. Take offs in 300 ft or so.