Thought you were going to have to crawl on your stomach... like a 'scene from Flight of the Phoenix!' Hope you're on the mend Keith, and everything heals as it should.
Firstly, i'm not going to pi$$ on your chips so to speak, because any adventure is worth doing if you prepare properly and do the homework. Going with a convoy of other SIBs and RIBs makes sense, although, the weakest link will be the slowest boat, and the weather window is key.
My family are on the west coast of Lewis and I've grown up (during holidays there) looking at St Kilda and contemplated a similar scenario.
On a clear day from Brenish, Uig, you can clearly see St Kilda and to the NW the Flannans. St Kilda is a good 45 miles offshore, so your first problem will be fuel, especially there and back and contingency if the weather is rough as you'll burn more if you're in the thick of it.
Secondly, it's open water. If you miss St Kilda... the next stop is Nova Scotia! We had a Minke whale come next to the boat last year. It was getting dark, the sea was inky black, and the only noise was the occasional gull or the water lapping on the hull. I nearly had a heart attack when the whale surfaced, took a breath, then dived again. Makes you appreciate how small you are in the scheme of things.
Seatrek, a local company do the trip (weather dependent) during the summer months. Might be worth contacting the owner Murray McLeod for advice, as he knows the waters well, the restrictions on St Kilda, etc. seatrek.co.uk - seatrek.co.uk
Alternatively, you could opt for a trip (possibly closer to home), again in convoy as preparation. Check out this thread. Exploring the Summer Isles
Lastly... Enough of my guff...enjoy this and best if luck.
Ah! St.Kilda,yes that is on my list of 'to dos' but not in MY boat, the Seatrek option is though.
Yes, Eilean nan Roan it is. I'm not sure that Rabbit Islands or Eilean nan Gaill to give them their Gaelic name were ever inhabited. There is also Neave Island which is just out from Skerray pier.
The trip from Srerray pier to Mol na Coinnie (Candle-lit Beach) is just over 2.5 miles.
There are many reasons for safety that this would need at least a couple of small SIBs, but having crossed the Pentland Firth in mine I'm sure that the trip is not out-with the realms of practicality.
BTW John the leg incident was not much fun, but it is funny! Well now it is.
Anyway back to the proposed expedition. I am in touch with someone local who has been to Eilean nan Ron a couple of years ago so I'm looking at the current condition of the pier there as the steps up from it are in a bad condition. This may mean that the best way to get up onto the island is to send someone up the rocks and then use ropes to get up from the beach. Anyway this all depends on getting a few people interested in making the trip.
The island is steeped in history and it would be good to get a photographic record before the physical remains deteriorate too much. There is also an abundance of wildlife and the island is used by a large colony of breeding seals.