I hate going over without nose plugs. Even going through a meaty stopper can force water up the nose. But going upside down is the worst thing for me. I can't seem to close off my nasal passages and water ends up going down my throat! So I don't really care how I look, I wear nose plugs as a matter of course.
I also wear ear plugs now too. But make sure you get them custom fitted or they will be next to useless. If you have any doubts as to why you should wear ear plugs, this is what the resultant operation looks like to get rid of surfers ear…
I have been told by people who have gone through this that it is every bit as painful as it looks and that they never go out without ear plugs any more.
And incidentally, if you think surfers ear only occurs from going underwater a lot, think again! It can result simply from being around lots of water spray (i.e. going through rapids even without going over) and from being exposed to cold wind a lot.