Trim foot pocket ends
First you will need to trim the ends of the foot pockets sides. There is a small nib which normally fits into the plastic blades. I trim this at a 45 deg angle so it does not catch on line etc. Remember only trim a few mm ...
Insert Xfin into foot pocket
Here is a small video clip that might help.
Some of the silicon will ooze out, just wipe it up with bog roll or tissue paper.
Step 5Now that you have the sides on make sure that the blade edge with the ridge on is properly in the groove. I use the handle of a hammer to tap the edges onto the blade.
I hope this helps you in getting you Xfin or similar composite freediving /spearfishing blades into your favorite foot pockets.