Migraines and Prepositions

I'm on this website stating correct usages of prepositions and all of a sudden i'm completely lost and baffled. I knew I'd have this problem once i'd go and check these out but it was a matter of have to--if you know what I mean.

Ever since high school this preposition thingie was never easy. Apparently, 10 years later it is still as confusing as it was before. Oh when will this ordeal end??? Can't they just make a pill for this I can take so then I wouldn't have to worry about using "in" with bodies of water but "on" with small islands; "at" with places but "in" for cities, countries,etc. In tagalog, they might say "Pakshet"! In bisaya, they might say "Pisti"! I would say, "Lo-lo, Yawa".

Then I find myself going over my friendster photo captions and get more confused on whether it is kayaking ON Lake Balinsasayaw or kayaking IN Lake balinsasayaw; if its skimboarding IN Galera, or ON Galera--much worse, AT Galera! Ghad. This is by far at the top of my occupational hazards list...or is it ON the top?

Waaaaaahhhhh....help! Where is Ms. Piamonte when I need her? or Ms. Macquilan?? or Mrs. Mira ??? At this rate I certainly would settle for Ms. Seriales's opinion--hahaha, no way!

I have great faith. Someday I will master this and I will surely brag about it. For now, lemme just humble myself and get back to this conundrum.