I brought a delta 22 ' fin this year for my west Oz trip .
you don't have to be a full on speed demon to get the benefits of buying these short fins ,
I was able to sail at very low tides ,also ride straight over the weed bank at safety bay with out even touching .[low tide]
due to the fact that i mainly wanted this fin for my 7,0 ,this 22 was the perfect size .i found it a little big with the
25 knot days and 6,0 sails but ,getting a 20 or 18 or less would solve this ..
I was worried it would be a spinner ,but i was so wrong ,it is a grippy as my 33 -36 'and some ...
if your thinking of shallow water or reef SAILING ,these fins ROCK.
I'm very happy . with this product .even though this photo was taken on a higher tide ,i still left it on the board .115 rocket .

even though i only had one day at safety this year due to low wind .but stayed up north due to forecasts ...
the kiters where looking at me as to say ,hey ,how come you can sail over this ...

NO FEAR.... with this fin ..