Replacement Steering Servo

[Phoebe]

What do you like and why? Also, who makes good, boat-size heim joints? (my rudder linkage pops off at the servo horn if I
take a hard spin/spill)

[siberianhusky]

I've had good luck with Spektrum s6020 servos, get them at my local hobby shop, about 40$, no shipping and support if I have problems. Tons of torque, metal geared and digital.
I use 4-40 control rods with a Z bend at the servo end and Dubro 4-40 ball links or plain metal clevises at the rudder.
Hitec makes some good servos as does Futaba. Never tried any of the cheapies in a boat, seen a number of the budget servos fail in boats. Figure that when it fails, I lose a days running, order a replacement, pay for shiping from China and wait for it to arrive. I would have been farther ahead to buy name brand locally.
Some people on here have been using Savox servos as well, no personal experience with them.

[BHChieftain]

I like the traxxas 2056 waterproof servo:

http://www.offshoreelectrics.com/proddetail.php?prod=dh-2056

Chief