Agree with Dontgothere's post. Or maybe EZY fancy poking the RYR hornets nest by offering it!
The route was developing nicely numbers wise (no, I don't know the yields) until the commencement of Winter Season 2014 when the agreement with Flybe was put into operation. There were regularly 3 flights a day in early 2014 and even then (over optimistic) talk of increasing to 4 a day. From the end of October, the flights were decreased to at most 2, and then latterly one or no flights per day, at less useful timings for businessmen than had been in place before.
Here are the monthly CAA figures since inception of the SEN/DUB route:
2012: 0 0 0 0 3497 4253 5168 4762 4425 4653 4578 4155 Total: 35491
2013: 3330 4948 5154 4840 5954 4955 6077 6427 4300 4927 4744 4771 Total:60427
2014: 4038 4446 5063 6063 5913 6909 6427 6449 5180 4939 2840 3332 Total:61599
2015: 1680 1087
They show quite clearly the effect of Flybe involvement with the route from end of October, as opposed to Stobart Air/ Aer Lingus arrangement up until then.