It would seem that SMB are going to be difficult to find after making some phone calls to fisheries. I would prefer to avoid babysitting my pond and having to constantly analyze the fish size, although I don't mind occasionally. I have enough other things in life to manage so a "set and forget" would be the most convenient. Although that may not be very realistic.

Based on where I am and what I have right now, it seems that the HSB may be the best option, as I could always add the SMB later if I decide to. Do I also need to add some crates to the pond if I go with that HSB vs the SMB?