Mike,
I can appreciate that it won't be perfect, actually I think it gonna be cloudy here
.
The next time there is a multiple GRS/Satellite/Shadow transit when Jupiter is well placed will be on Mon 23/5/05 at 6:50pm. There will then be constant transit activity with the GRS, Io, Europa and their shadows transiting the planets disk till midnight. That is a show not to be missed.
Clear Skies
John Bambury