NE M - Some good points in your message. Thanks for the ideas. I have a couple comments.
2. Collapsible design could be tricky. When one starts bending and folding the durable plastic netting, it tends to stay creased. This is not a problem if the cage remains together. But folding does tend to cause gaps in some instances at seams where fish can get out, esp if wire ties were use to affix seams. My first cage was a commerical collapsible design and it is not used anymore due to creases in netting. Creases want to cause folds in cage walls and misshapen cages. Fish cages are best if netting / walls stays flat and straight.

3. quick break down during the off season. If storage space is a problem, why not leave the cage together and leave it in the pond empty? It will then act as refuge areas for fish small enough to get inside the mesh.


aka Pond Doctor & Dr. Perca Read Pond Boss Magazine -
America's Journal of Pond Management