Rowly, I think the 4 x 8 shelter will work. I have one about that size and it is being used by 15 Khaki Campbells and Buffs all about 6 weeks old. It will be used mostly for sleeping and they do like to pile up. You can get smaller incubators, do a google search for egg incubators and I am sure you will get a good idea about what's available. Ebay will probably be your best source for a used one. I have had a mixed results hatching this year. Turns out the thermometer I was using was 6 degrees off. Make sure you calibrate your thermometer when you finally get around to hatching! In the meantime I know of 3 nests brooding on my pond. A total of about 40 eggs. I have had this many times in the past and have yet to see a successful hatch, so time will tell. Pending that, I doubt that the young ones will survive the bass, I know I have some 5+ pounders in there and they are always hungry.
Good luck
Jim
