Harlan
I think it may be another kata you're thinking of. I've been introduced to several Matayoshi kobudo versions of Suishi no Kun and I have not been shown any one-handed movements. For that matter I have not been shown any one handed movements as part of the Matayoshi syllabus for bo.
Like you said “Both hands on the bo at all times.”
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Pat O'Brien
Southwest Seibukan
Patience my ass I’m going to kill something