hydraulic flow control - TractorByNet

I am needing to install several smaller screw piles (pylex) for a deck that I am going to build and I have been tossing around the idea for building a simple hyraulic instalation tool to bolt onto the bucket of my tractor and be run off of my third function. I would build a basic frame and just use the hydraulic motor from my capstan winch. The problem is that the motor was sized to give me 60 rpm at idle for the capstan and I would like to have around half of that or less for the screw piles. Can I just add a flow control valve on the unit that I will build (after the third function valve) to slow the rpm down. Will I need to install a line back to tank from the flow control valve for the unused folw? Or would it be best to run hoses from my rear remotes? Also the normal 3rd function that closes the work ports when the valve is in the closed position will bring the hydraulic motor to a sudden stop. Ideally you'd want a motor spool valve that leaves A and B ports linked in the closed position. It might be ok for a relatively small number of uses.

I have also seen one way flow controls like these
1/4 NPT 5 GPM Prince WFC-4 In-Line Flow Control | Prince Mfg | Brands | www.surpluscenter.com
used to control motor speed. Running a restriction like that would probably heat the oil up over a long run of the motor but it might be ok for short term use.

If I used my rear remotes would the internal relief on the remote valve protect the hydraulic system from the extra pressure caused by the restriction of flow control valves.
Or would I even need the flow control valves if I used the rear remotes. Could I not just feather the handle on the remote valve to give me the speed I want.
Sorry for all the questions, Im kinda new to hydraulics

I’m curious too. My simple mind would say all you are looking to do is slow the flow a bit- same as just barely moving/opening a hydraulic valve. But to do that simply and repeatedly (to maintain your hydraulic motor RPM) you want something to restrict flow. The simplest would be an orifice fitting that you could drill in steps to get your flow. The next step up in cost and complexity would be and adjustable flow control. Any time you restrict flow for long periods you are going to make heat- maybe that’s what the return line and added complexity is for. But I’m not seeing the need for a lot of complexity- especially given the “home owner” type limited use of the setup- my thinking would be different if you said your new business was drilling these things and you were going to be doing it 8 hours a day for 10 years.