F#4-G4. Christlieb, Don. Pictoral Fingerings for Bassoon. Published by author, 1966, p. 27.

    Eb
o x x | x tr o
       Bb

F#4-G4. Houser, Roy. In Klimko, Ronald. Bassoon Performance Practices and Teaching in the United States and Canada. Idaho: University of Idaho, 1974, p. 64.

 1/2 x x | x o o F-tr
d

F#4-G4. Schink, William. In Klimko, Ronald. Bassoon Performance Practices and Teaching in the United States and Canada. Idaho: University of Idaho, 1974, p. 69. Same as F#4-G4 trill on Cooper p. 231 except no whisper key.

    Eb
/ x x | x tr
       Bb

Or try:
 

    Eb
/ x x | x tr o F
       Bb

F#4-G4. Timm, Everett LeRoy. The Woodwinds; Performance and Instructional Techniques. Boston: Allyn and Bacon, 1964, p. 176.

    Eb
o x x | x o o F-tr

    Eb
o x x | tr o o

o x o | x tr o F

    Eb
/ x x | x tr o
       Bb

    Eb
o x x | x tr x F

Heckel-System (German) Bassoon Trills and Shakes by Note Names