Yes, I have used a MinnKota 45 lb thrust saltwater trolling motor on a similar 8" fiberglass
dinghy for a few years now.
The shaft of the trolling motor was too long so removed the head
and cut it down about 6". If you do this you have to be very careful to not cut the wires in the tube. I used a Dremel cutoff wheel
to start and finished with a hacksaw for control.
I mounted a battery tray under the middle seat and use a Odyssey blue top marine
battery. I had to replace the wires from the trolling motor to the battery with longer ones.
This motor pushes the dinghy along at a strong pace against wind and waves and the battery lasts a long day. I either take the battery out and charge it on board or hook a small portable solar panel up to it in the dinghy.
It is very easy to mount the lightweight motor on the transom with one hand. The battery is lifted out/in with a length of rope
from the side deck
. You won't fly across the anchorage but you will enjoy the quiet cruise
across the anchorage. Much easier to meet people on other boats as you can have a conversation without having to turn off the motor.
Edit: forgot to add that I have a small Rule
automatic bilge pump
mounted in the stern and i don't have to bail the dinghy anymore!