  We report on findings from scintillation analyses using high-cadence
observations of nine canonical pulsars with observing baselines ranging from
one to three years. We obtain scintillation bandwidth and timescale
measurements for all pulsars in our survey and obtain scintillation arc
curvature measurements for four pulsars, detecting multiple arcs for two of
them. Using updated pulsar distance estimates, we find evidence of previously
undocumented scattering screens along the line of sight (LOS) of PSRs
J1645$-$0317 and J2022$+$5154, as well as evidence that one of the arcs along
the LOS to PSR J2313$+$4253 may reside somewhere within the Orion-Cygnus arm of
the Milky Way. By augmenting the results of previous studies, we find general
agreement with estimations of scattering delays from pulsar observations and
those predicted by the NE2001 electron density model. In a similar manner, we
find additional evidence of a correlation between a pulsar's dispersion measure
and the overall variability of its scattering delays over time. The plethora of
interesting science obtained through these observations demonstrates the
capabilities of the Green Bank Observatory's 20m telescope to contribute to
pulsar-based studies of the interstellar medium.
