So reading this thread... I have a 2001 192 with a 150 2 stroke (HDPI) that currently runs great and has around 700 hours. My thoughts are that when this motor goes I'd repower since I have the newer hull and the boat seems to be in great shape. In my case would you also think that it's not worth re-powering a 20 year old GW? The idea of having my boat with a new 4 stroke seems very appealing to me (compared to spending a lot more for a new or newer boat with a 4 stroke). I'd appreciate any thoughts on that.
A lot depends on the true condition of the motor and boat and electronics. Also how you use it.
Freshwter or salt? Trailer or dock? Florida year round or 6 month season?
Its a 19 fter with a single. You probably run around a lake or a bay. If the motor fails you drop anchor, make a call & wait...no big deal.
At that age the motor gets crusty, tilt & trim rods get pitted, steering pivot gets tight. Things start to nickel & dime you.
But depending on how you use it you might just be best off gambling with the HPDI
At 20 the boat in good condition can have another 10 years. New motor gives you +10 years. Do you want that size boat for the next 10 years?
Do you dream of a bigger boat? Don't put a motor on it to sell it.
The boat is FREE to you. So $15k gets you a nice used boat with a brand new motor. You can sell the HPDI for a few $.
So my answer is maybe or maybe not