No doubt a good quality oil is better havent tried your suggested oil but ive been using good quality 2 stroke oils made for bikes for years and never had a single issue with any engine , i only ever use fully synthetic oils and they work very well for me .Ive tried quite a few oils over the years some cheaper than others and to be totally honest ive never noticed much difference , i always run high oil ratio in my engines 14-1 sometimes 16-1 depends on the power of the motor . More oil = more power and better protection in my opinion .Ive seen so many guys running 25-1 ratios and thats fine in your lawn mower but not in an rc boat engine 16-1 minimum would be my suggestion .
That's a lot of oil!
Depending on the type of oil you use you may feel safer using a really "thick" (high viscosity) mix like that and if it works for you then that is OK - but that is a LOT of oil !
I have never run anything with that much oil as it stifles the engines power and I have always wanted to run my engines at their most efficient. Bogging them down with with such a high oil to petrol ratio never worked for me and over-oiling a two stroke engine will usually cause faster carbon deposits in the engine and the exhaust system that will need to be cleaned to keep the engine running well.
24-1 is universally considered to be a fairly "rich" mix but is ultimately also a very "safe" mix with just about any type of genuine two stroke oil, but most run with a thinner mixing ratio (depending on the type of engine, the type of oil, and what the engine is being used for).
The oil manufacturer often offers a suggested mixing ration on the product label and is a good place to start and good manufacturers will have a technical department that can advise on any particular or unusual application their oil is being used for - but ultimately will not have the "hands-on" experience of a model engine specialist who will have years of practical experience to call upon.
Racing engines in large scale r/c cars, skateboards, helicopters, aircraft and boats is something I have seen plenty of over the last half a century of working with these engines every day of my life and I have even helped those that race chainsaws !!!! (ultimate fast log cutting) but thick oil mixes have never figured in any of them.
I also rode two stroke trial bikes and a 50-1 mixing ration is not uncommon (and is the mix recommended with every new Montessa I ever bought)..................but if using "general purpose" or lower quality oils then a thin mix could be a bit risky - but the way I see it is why have an expensive engine and feed it "any old oil" when the best is so inexpensive?
A good two stroke oil is one of the least expensive things you will buy for your boat so I would always buy the best that I could find to get the best performance out of the engine whilst offering the most protection and anti-carbonizing qualities.