I just use the recommended TyGer knot. Worked for me so far. Although, they say all these knots should work:
Uni, Palomar, Shearer Spider Hook, Rapala, Riffling Hitch, Simplified Blood, Extension Blood, Improved Blood, Dropper Snell, Improved Clinch, Double Improved Clinch, Albright, End Loop, Simple Loop Connection, Rhode Loop, Surgeon, Surgeon Loop, Single Over Hand Loop, Trilene, Homer's, Offshore Swivel, Crawford, World Fair
Good stuff!