I came across some hooks I have had for many years they are a Partridge Kevin Maddocks with the barb on the outside. I have never used them as all the waters I have fished since the late 70s have been barbless only. I first read about the reasons for having a hook in this configuration in Carp and the carp angler by George Sharmen in the 1984 edition first pulished 1980 .He explains in the book the reasons why this configuration give better penetration of a barbed hook. In the book he states that he did some tests on a cork- rubber compound and plain cork. Pull requied to sink hook down to the bend in pounds as follows Standard unsharpened. CORK 6.3 CORK RUBBER COMPOUND 6.3 Outside barb. CORK 3.3 CORK RUBBER COMPOUND 4.5 Cutting barb self fashioned Cork 2.8 Rubber- cork compound 3.7 Barbless CORK 3.3 RUBBER- CORK COMPOUND 4.5. As I said I have never used these hooks I wondered if anyone else had.