hi i,m no expert but i will try to help.first of all is your net 34 yards at full stretch if so the net needs setting at 17 yards in total to give you 100% bagging.after reading your first post about this the depth should be 14 0r 15 meshes but then you need to add a selvege mesh on top and bottom of your net which is usually knitted by hand.as regards the poles i would set them at six yard intervals so your 17yard net with 100% bagging would need 4 poles.as i say i,m no expert but this is info i have picked up from here.hope this helps