Tried standard tips, but did nothing for me. Then I had to put new

tips

on

(another story).
Elected to go with Finch Tips.  Turned down and invented by Dr

Finch.

In

fact I put them on
Rocky Jones racer, OLE BLUE.  Rocky said they did exactly what he

wanted.

Then he
died as a result of a mid-air.
At any rate I put hem on my LongEz (you flew with them) and it

resulted

in a

lot more
elevator authority due to delaying tip vortex.
I like them, and so will you.  Plans are available if you wish.

Fly fast, land slow
Bill

The weirdest wing tips have the most effect. Here is an aerodynamically
test and approved by Canada wingtip design called the "reverse shear"
that has proved to have beneficial performance effects. Strange, no?
Performance data by user......
Type of aircraft: C177RG with turbocharger
Modification to date: Tail cone fairing, exhaust faring.
OAT at sea level: 59 deg. F
OAT at 5000': 43 deg. F
Gross weight: 2401 lbs.
CG: 106.7
Winds: 12 to 15 KTS straight down the runway.

New shear wingtip
SL to 5000' 7min 57 sec average FPM 629
1000' to 5000' 6 min 10 sec average FPM 649
IAS at 5000', 25" MP, 2500 RPM, 130 KTS

 Original tips
SL to 5000' 8 min 23 sec average FPM 596
1000' to 5000' 6 min 34 sec average FPM 609
IAS at 5000', 25" MP, 2500 RPM, 128 KTS

I performed power on stalls with both tips, gear and flaps down. New
shear tips: 38 KIAS Original tips: 43KIAS. The stall break was much
smoother with the new shear tips, less roll also. I also found with the
new tips that I get the same rate of climb no matter what speed I fly
between 82 KIAS and 95 KIAS.
[Marc Wiese]

You will get more improvement at even higher altitudes Mark as in effect
you have increased the span & wing area, reduced the span loading and therefore 
reduced the induced drag due to lift. What you have also done is
slightly changed the lift curve slope which is dangerous to do on a canard
type airplane. The balance of lift curve slopes between main wing and
the canard is critical to the stability and control of canard type airplanes.
In other words do not increase or decrease the span or area of a canard.

Paul Lamar
 
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