I agree with Ron, do not use a micro servo.It will not stand up to the stress and strain.
Most good quality servos as shown in Ron’s picture are good and there are many different types out there.I tend to used brass geared workings as they are more robust,but cost a little more
Model boat Mayhem site,there are various outlets mentioned on it.
Cornwall model boats.
to name but three.They are a difficult scale but are out there depending on what you want.