We have a 2023 R27OB and considered several options. We wanted the solution to be somewhat inconspicuous, but large enough to be actually functional.
On the port side helm seat there is a step into which we could put a small bin. Yes, it makes stepping up into the seat a bigger step, but our 5’0” Admiral can do it!
We bought this particular bin on Amazon, but there are several alternatives. The bins takes small trash bags (4 gallon size), and can last a day+ before changing.
Note: our little boat dog is trained on pads and we can use 3+ a day. Those along with our human trash goes into the bin. BTW, the Admiral and Captain are not pad trained!
Here is a picture.