I'm not sure why Trifecta 86 if you wanted to size down from the 82 but I'll assume you meant the Trifecta 76 which is a very nice paddle.
I know all of the above and still have the UV 82 and Trifecta 86. Also tried the BP Hydro and didn't really like it, part of it is the shaft as well
as I am an oval shaft fan.
As for the splashing with the UV82, if you use it correctly you shouldn't have any splashing, I suspect you need to tighten your technic a bit.
with that in mind the Trifecta is more technical so not sure you'll benefit from it as much. I would go with the UV77 before I'd go with the
Trifecta 76 if I were you. It might take take care of the splashing problem as well which sometimes caused by an oversized blade.
If you can't find that one either, I could recommend the ZRE Power Surge:
www.zre.com/sup-paddles/I have few of those and they do have a really good oval shaft. These are truly the lightest paddles on the market ( I have one that weighs 306grams/10.8oz for when I used to race). The blade is similar in feel to the Trifecta only a bit less technical and a little more power for
the same blade size.
The latest shaft I got from them to try was made out of Textreme (not to confuse with the BS Texalium of BP which is a glorified fiberglass)
It is super light and really strong ( been riding it all winter in rough downwind conditions). It came 383grams/13.5oz for a 3 piece adjustable paddle (hot glue) for a 78sqi blade size/50inch shaft and 10 inch adjustable handle part.
They do ship all over the world and they are fairly priced for the quality which is top-notch.