Yes triple fishermans knot is reccomended for making a loop...as in a continuous loop...as in tying the two ends of a length of cord together.Yes Titan is the product I found. Seems everything I read suggest triple fishermans knot for making loops. Is that what your doing, or are you using the figure 8?
For a loop on one end of the line...as in making a rope tether...I used a double figure 8 loop backed up with a double overhand knot.