They effectively lead their close rivals by 14 points after Compton & CF crashed to a five-wicket defeat after being put into bat and dismissed for 141 (Scott Spearing 40) by Ryde.
Tom Durman hit 61 for Ryde having shared six of the CCF wickets with Kerry Rice.
The Flynn brothers, William (71) and Tom (69), starred as Hursley Park rattled up 257 and won by 68 runs at Bournemouth.
South African Ben Hummell hit 184 (26 fours) for East Woodhay against Hythe & Dibden.