I read a report from a gentleman who just spotted Sirius B using an idea that is different from the common ways people normally find it with difficulty. He has a 120mm APO refractor and tried to go relatively low power. He started at 200x with a really good sky. He had some sparkles around from Sirius A's glare and could not see Sirius B. He dropped to 80x, the sparkles went away and he could see Sirius B, but not easily. He then went to 47x and Sirius B was obvious to him.
The next time the sky is really good, I am going to try that with my 2102 refractor! I have never seen the Pup, so that is worth a try. From what I have read, long refractors and APOs have greater success with this object than reflectors or catadioptrics due to the way they handle the glare from Sirius A.
Right now, from what I read, Sirius B is on the east side of Sirius A.