There is no need for you to dock your sheep unless you like that look. After 30 years of sheep, an undocked sheep looks strange to us. Hair sheep (except Dorpers) are seldom docked. The reason for docking in wooled breeds is to avoid fly larvae and maggots in the wool under the tail from blood and birth fluid, poo and pee. When you are raising sheep for a wool crop, the wool from that region will be discarded due to the above reasons. Most breeders/ranchers who run commercial Dorper/ Dorper X flocks often don't dock. If you are bringing 100+ lambs to the sale yard and selling by the pound (dream on So Cal breeders LOL) those extra ounces of tail (not to mention testicles) per lamb translate into $$$. At just 8 ounces per tail per lamb that is 50 extra lbs. on your check, and if you have pasture and are keeping your lambs until 70-90 lbs., those tails and testicles will weigh a lot more. Anywhere from $100 to $200 per 100 lambs. Since a lot of commercial ranchers are bringing in several hundred lambs at a time, those tails and testicles can give you a big bonus. And you save time castrating, avoid the possibility of infection, and/or cost of an extra vaccination for tetanus.
We dock our ewe lambs but no longer dock or castrate ram lambs going to the sale yard. Ram lambs grow faster and heavier than wethers and ewelings. And our ethic buyers prefer lambs with tails and testicles. Since we don't have any graze here, we pull our ram lambs straight from the ewes at 3 months (weaning), toss them in the trailer, and take them to auction. They usually average 50 - 70 lbs. at that age depending on whether they are twins or singles. If I plan to keep and register a ram lamb, we will dock him.
Isn't it a small world about you knowing Laura N! We got our first goat - a beautiful little Toggenburg yearling from her, as well as our original Dorset sheep when she lived here in Tujunga. When DS2 sold his Dorset flock to concentrate on his dairy goat herd, Laura bought the small flock from us since they were her original line which she purchased from the sheep instructor at Cal Poly Pomona. He had developed them over the years, and they were wonderful sheep, super cam, great wool and carcass, and could have doubled as milk sheep. We all learned a lot from those Dorsets. Those Dorset traits are what I love in my White Dorpers. She is also the instructor DS3 and I went to with our Aussie for herding classes.