Ipswich were also running Open meetings in 1965.
On the subject of 1965, what did these 4 tracks have in common?
Cowdenbeath, Ipswich, K.Lynn, Rayleigh.
Yes, part of the group of Poole Juniors that also included Middlo.
Yeatesy at Poole but Ringwood is referenced https://scontent-lcy1-1.xx.fbcdn.net/v/t1.6435-9/92355133_1040778626315488_3927287347791527936_n.jpg?_nc_cat=101&ccb=1-5&_nc_sid=b9115d&_nc_ohc=SvU6gVg9g-AAX_jo5_j&_nc_ht=scontent-lcy1-1.xx&oh=a3e7245b49dd18d875d172ca9677dc4e&oe=61B20ECF
Middlo https://scontent-lcy1-1.xx.fbcdn.net/v/t1.6435-9/92422220_1040778356315515_6531625455886270464_n.jpg?_nc_cat=111&ccb=1-5&_nc_sid=b9115d&_nc_ohc=Xgu_s_M59lAAX9YV345&_nc_ht=scontent-lcy1-1.xx&oh=b7a2470c884fb4bac0ee956ee3af41f7&oe=61B1E85F
Edinburgh Marine Gardens. Side by side georeferenced maps viewer - Map images - National Library of Scotland (nls.uk)
It's clear to see why it was so-named.
It was speedway in the 1950's, initially for training but the Ringwood Turfs were members of the SAL in 1954/5. It was later used by Poole for training in the early 70's.
The track you saw racing on was the 'mini longtrack' which was closed after a sidecar fatality in 1992.