Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: Good morning, have an '86 Ercoa 24' pontoon with a '86 Merc 45 hp. Does anyone think one of these could help my boat? Thanks happy holidays to all.
Document: Now the boat does not cavitate (although it sounds funny in a strong turn) I get up on plane fast and seems to plane at lower speed and best of all it does not chine walk. It seems to slow the boat in a sharp turn but at least it is safe. It still porpoises in waves so I might get trim tabs. Looks nice - good color match to the Yamaha. I think I lost a couple mph at the high end.
nice product...easy to install...works well on my boat very stable now...really didn't help it to get up on plane any faster
Used to have problems trimming out and cavitation at high speeds. Bolted this on and saw my rpms jump 1000 and high speed increase by 10 mph. Actually caused some porpoising of boat at full throttle with the trim all the way down. Best thing I could have added to my 195 Tahoe.
This made no difference in handling , steering or plaining  for my boat. BUT My boat is a large pontoon so it may be great on a bass boat, It does keep my boat from cavitating or prop blow out when I turn sharp.
All in all I'm happy with it.
I purchased this product through Amazon.com and received it within 1 week. I have only used it on one 2 day boat trip, but it seemed to do what the company claims it should do. We had 6 adults and 2 children on our 19 ft. ski boat and pulling up skiers and wakeboarders was no problem. The boat leveled out quickly and we were able to keep a steady speed without adjusting the throttle. Don't know if it helped with gas mileage, but it couldn't hurt.
I have a 18.5' bow rider and this helped quite a bit. Installation was very easy, like previous poster said, more time was spend double checking than actually installing. This did help with getting on plane quicker, and also helped getting on plane with a bunch of people in the boat. I wasnt really concerned with the cornering or chine walking, as that was not a problem for me. It also helped with porpoising.
I bought this to replace a dolphin style hydrofoil just to see if there would be a difference in performance. I and my family were amazed at the difference in the porpoising effect. Even in choppy water it was smooth as could be. Not sure at the top speed effect cause I changed the prop pitch at the same time. It bolted exactly to the existing pattern of the old hydrofoil. FYI- I have a Mercruiser 140 I/O on a 16' Arrow Glass boat.
I am mixed on this hydrofoil. It is exactly as described, sturdy and easy to install on most any boat motor lower unit. I had it on my Force 120hp in about 20 minutes and it felt very secure. My hole shot was much better and a smooth pull up on to plane in no time, so that part was good.My problem came when I was trimming at medium to high speed, it began to porpoise as I tried to raise the front end of the boat with my tilt.
Installation is as easy as it could be, with the sport clip no drilling required. The provided quick shipment and I was back on the water in no time at all. Outstanding service and I will use this company again.
Answer: yes