One of the many things we do at the ranch here in Idaho is evaluate different fence products & construction techniques as they come to our attention.
Five years ago we installed some end braces using the E3 Corner System brackets (You can find them here on page 18 ). We initially put them in using either 1-5/8″ or 1-1/4″ Pasture Pro posts. The brackets are designed for use with fiberglass posts, but we wanted to see what would happen using the more flexible, wood-plastic composite Pasture Pro posts. The E3 Corner System can be installed with nothing more than a hand post driver. They are very handy up there on the side of the mountain where equipment can’t go.
The 1 5/8″ Pasture Pro assemblies have held up fine & are as solid as the day we put them in. The 1 1/4″ assemblies were a complete failure as the Pasture Pro posts were too flexible to take the strain. After 5 years, we fixed all the 1-1/4″ assemblies by replacing the angle brace member with 1″ Fiberglass.