I also use a sea anchor as it's more lightweight than a traditional anchor.
I find I can control the drift better. Get one for a boat that is less than 20ft. Use stout rope and a strong clip. Lot of weight on the line when in the water and the current is running.
I've used my sea anchor frequently and have never had any problems with it fouling the rudder. On my new kayak I mounted U-bolts on each side behind my seat. The main line for the sea anchor is attached to a U-bolt with a stainless steel snap hook. I can attach the main line to either U-bolt to adjust my drift attitude. I have a smaller line attached to the small end of the sea anchor. This line has a snap hook that clips to an eyelet that is just forward of my seat. If I need to rapidly retrieve the sea anchor I just pull in on the small line to collapse the cone and pull it into the yak. Much easier than trying to drag it in with the main line.