Okay - Ill take a stab
Would 20” shaft work for the same location as described in Jack’s mod?
>> Jacks Mod is for a longshaft motor which is usually defined as 20 inch. I think Jack referenced the exact motor he used in this post, so you can check the shaft length on the web to see how it compares to yours
(Short is 15 inch, long 20 inch, Uber long 25 inch)
I assume that if I steer with the rudders and the motor is in down position it will not interfere with the rudders. Is this true?
True on my

and not too hard to make sure this isnt an issue.
If the rudders are fully up and I steer with my main motor and AUX motor is in up position will it interfere with the rudders?
>> Not necessarily - you have to fit this to your exact motor and bracket position as part of your install. There are positions on my Nissan 4/5/6 HP install where the rudders will foul the motor in the rudder up position
When wakeboarding my rudders are out of the water but tilted forward. Will they interfere with AUX motor then?
>>cant help you on this one
When wakeboarding I connect the tow harness to two rear docking cleats. Would tow harness interfere with the AUX motor if I move the motor to down position?
>> They dont on an X
It looks like when the motor is in down position it is hard to get to. How do you trim power and start? Do you install another remote control on the pedestal or you can do it directly on the motor?
>> It is hard but startable from the transom on an

at least. A marine tiller extension costs 150 USD and will solve this problem. So will a 3 USD piece of white (not blue) PVC pipe from Home Marine Depot.
Is the motor fixed in place or you somehow use tiller to steer with it?
>>You can do both, but I use the rudders to steer and lock the motor in the straight ahead position
Sorry for that many questions but I would really appreciate if somebody could answer them. Thank you!!!!!