Some good material here, and thanks for all the input. I have to say I particular like "mdovey's" summation:
" LAND IMMEDIATELY - enter a descent and look for somewhere to land
LAND ASAP - look for somewhere to land and enter a descent"
And the Poole Harbour link deserves another airing:
http://www.aaib.gov.uk/cms_resources...4%20G-BBHM.pdf