Broadhopper brings up an important point based on his real world experience: we can parse the meaning of particular statutes here on-line, but actual implementation by officers in the field can be quite different than out interpretations.
Below is an interesting Supreme Court decision regarding a fatality resulting from a person bow riding (and an intoxicated operator). Rather lengthy, but of interest is the MP's testimony that if he had observed someone riding on the bow he would have cited the operator. While the "straddling" portion of the RSA is cited, the officer clearly interprets this as "riding" on the bow.
As always it is fun and educational to debate these topics here, but a quick call to MPHQ should resolve just what the actual law enforcement policy is.
https://www.courts.state.nh.us/supre...16025cable.pdf