Congrats on the Pascal - keep doing these, it’ll be useful regardless of what college you attend.
You can try and be excellent at golf - you can look at highly ranked D3 colleges and see what their golf team does, whether you’d be recruitable. (Fewer colleges have sailing but if it’s a strength you can also look into it).
If you plan to return to Canada, attending a Canadian university may be a better plan.
In any case Grade 10 is not “too late”.