Knocking from transmission or prop?

[ClassicChevy]

He guys,

Noticed a knocking sound coming from the bottom of the boat on Sunday.  Not sure if it is the trans or prop shaft.  Only does it when idling in forward.  Stops when in neutral or when I give it throttle.  Whatdo you guys think?  Prop shaft bushing?

Thanks

Bill

2015 Wakesetter 22 VLX

[McMiller]

Check the bolts that attach the shaft to right where it goes in the v-drive.  They can loosen over time, I would call it more if a loud clicking when in gear at idle.

[psiedtsi]

Any play in the strut bearings?