Welcome to the family. While there is no formal weapons system within Yoshinkan Aikido, nothing on the officially syllabus, many schools have incorporated such into their regular practice. As for the type of bokken, I would suspect the same as everyone else.
Best bet is to talk with the instructor about what they do and don't do. Anything else is pure speculation.
Hi Steven thanks for your reply I'm going to goryukan at belper in derby under a instructor called
Henry pielacki I'm sure your name is on their website I'm looking forward to it but I won't be able to attend all the time as it's a fair distance from myself