Having had a bit more time to think about this and all. I am just going to put a few suggestions up. Feel free to tear them apart, discuss or add to them. You don't have to know anything about competitions or even want to do them to post here.
Wavehoppers and K-boats:
One/ two sessions on the Lee to get comfortable and then a river trip or two leading to a WW race that is close by.
I would suggest if there is a few people interested in running a river then the first river trip alongside the club trip to the lower Bandon. Details on the official outings section.
Polo:
A weekend morning or two in the next month or two. And maybe a local derby of beginners teams in December (Intervarsities in Feb) with a minimal amount of coaching. Say a Sunday afternoon 4hrs, with 4-5 teams and a couple of games with a 15-20min 'coached' feedback session at the end so people can stay or leave for it.
Slalom:
Not my area. And no course within distance. Maybe await the Limerick competition in November.
Freestyle:
Muirs idea of a few heads meeting and running a session and seeing where it goes from there. Hopefully the club can get involved with the Cork Rodeo again next year.
Sea Kayaking:
Seems to be happy out with 2 races in the calendar and the informal sessions. It might be worth doing a loose plan from Feb to get people ready for the Ocean to City again. Start in the lower harbour and work up to doing the course in sections and in reverse to have people paddle fit after the winter of short river running.
It is easy enough to post thoughts and I am willing like the Time trials to pick some core dates and be there and run those dates and watch others add the flesh to the bones with other stuff. I have an interest in the WW/ K-boats and while I don't have a huge amount of time would happily add to the polo as well. Maintaining the race calendar thread is easy too. Anyone can add to it so we should have an excuse for not knowing when and where to race.
Development further than these short term plans are the preserve of the competitions officer and the rest of the committee. But without guidance on what people want and where to go, nothing can happen.