[Mr. X]

Alternatively you could buy a non-finned spear designed for Dyneema wishbones. I saw them offered in a euro catalog last year -- Picasso's I think. Also, of course, Rob Allen spears - which seem pretty tough to me - and which have the flopper/barb on the bottom (you could change that if your prefer euro-style on top).

Not sure what the current craze for shark-finned spears is all about, I guess it would make loading a little easier (as does having the flopper on the bottom). However, it would also create drag & presumably more damage on the fish on entry & when removed - or is that the idea?