The instrument at Wimborne Minster has no 32ft. register at all. It is necessary to resort to subterfuge to obtain any type of 32ft. effect. One such (perhaps surprisingly) was - for a piece which ended quietly in A major - Pedal Bourdon, play low A, and the C# below, with no couplers, and under the Swell strings, box mostly closed. The same was true in B-flat major, except that one would play the D below, and low B-flat.
Another possibility, for rather louder effects, was to use full Swell (without the Mixture), coupled to G.O. 16ft., 8ft. and 4ft. flues (without Open Diapason I), with Pedal full 16ft. and 8ft. flues (coupled), and then play the first few harmonics of 32ft. on the Positive Gedeckt (8ft.), but without Swell to Positive. This worked surprisingly well in C major, E-flat major, F major, G major and A major.