I owned a Mooney 231 with a strikefinder
for several years. Worked great in my experience. Either picking your way around weather or flying along in the soup with embedded thunderstorms, I think it is the best thing going for real time wx in our planes.
Ground based relay type systems have a variable time lag that could be a problem in some cases. Of course the overall picture provided by Garmin et al is hard to beat for longer range planning.
As I recall the dots stayed on the screen, but all you had to do was push a button to get a fresh picture. Be sure to get the system with heading input.
If you're strictly VFR it might be overkill,
RV 7A N457RV
250 hours and lovin it!
Southern Nevada EAA Chapter 1300 - www.eaa1300.org
Paid VAF 03/17