Question: I'm a pretty avid user of SU. However, I spend most of my time there rather than here in the meta discussions.

I would be very willing and happy to become a moderator there to help even more, but I feel that lack of 'meta activity' would hinder that chance.

This isn't a cry for me to become a moderator, but just a general question as to how one can be 'noticed' if they aren't heavy meta users?

Answer: 
Use what abilities you have. Right now you can vote to close/reopen, edit, and retag. Do those things effectively and people will start to notice. You can also flag things for moderator attention to get noticed by the current mods.

**Note:** Do these things poorly and you'll naturally be shooting yourself in the foot.

You'll also want to keep asking/answering questions to get your rep up to the 10k level so you can start using *those* tools.

Basically, just be as generally helpful on SU as possible.
Create or become a meme, it's a sure fire way.

But jokes aside, just be consistent, friendly and helpful. The main thing is that you're there, a lot. If people can think "Hey, this is a great question for X, because he helped me in the past" then you're on your way.

Another thing. Mod != High rep user. A mod is a person that can be counted on to be there and can be trusted to do their job. So having a history of being awesome helps a lot.