I have a friend with a black lab, and I have a Great Dane. Also sand filter.
Buy these skimmer nets in link below, turn off vacuum and only leave on skimmer for ~1-2 days (starting during dog use, and leave on for 24-36 hours after). By then, all the non floating hair should be mostly in the deep end, grab your pole net and fish it out. Much easier with the nets! You can also throw them on the pump basket, but I recommend not just in case they get sucked into the impeller. Hence why I just turn off the vacuum and run the skimmer.
You are definitely going to get higher TDS due to the dirt they collect on their paws as they jump out jump in etc, but personally I enjoy the fun of a dog being in there with me. Bonus fun is get an RC Boat and watch the dogs FLIP OUT!
Coopache 30-Pack of Pool Skimmer Socks - Filters Baskets, Skimmers Cleans Debris and Leaves for In-Ground and Above Ground Pools https://www.amazon.com/dp/B073GSWKP2/ref=cm_sw_r_cp_api_glt_fabc_5N5R31JPJMYQRZ8J7W1K
Get a filter sock. They are like little cheesecloth socks with elastic that go into your skimmer filter and catch alot of fine particles.
Use some.of the other clarifier as mentioned and this should clear it up.
If anyone who is using these cartridges has a skimmer basket I HIGHLY suggest you buy these socks it saves so much from going into the paper filter
https://www.amazon.com/dp/B073GSWKP2/ref=cm_sw_r_cp_apa_glt_fabc_SVWW9D1PXV2PFD5JEYMF