I use the 4' heavy metal fencing topped with poultry netting. Heavy metal pound in posts. The fencing lasts forever, I have some that was used when I got it and have been using it for peas and beans for 15yrs. It's strong enough to keep dogs out with the heavy metal posts. It is movable, just takes time. I'll be adding electric for the diggers and climbers soon. Electric fencing is fairly cheap.
Putting in electric something like this;
Putting in electric something like this;