Agreeing with Raphael, my reading implies indirect-next-hop cannot be disabled 
on TRIO.  That said I do explicitly configure it on all of our MX gear.

You may also want to look at indirect-next-hop-change-acknowledgements, in my 
case I use LFA and dynamic-rsvp-lsp and have it configured acknowledging (no 
pun intended) it may be adding to my poor convergence woes without BGP PIC.  
FWIW I left krt-nexthop-ack-timeout at its default of 1s.

http://www.juniper.net/documentation/en_US/junos/topics/reference/configuration-statement/indirect-next-hop-change-acknowledgements-edit-routing-options-forwarding-options.html

-Michael

> -----Original Message-----
> From: Jared Mauch [mailto:ja...@puck.nether.net]
> Sent: Tuesday, April 18, 2017 2:48 PM
> To: Charlie Allom <char...@evilforbeginners.com>
> Cc: Jared Mauch <ja...@puck.nether.net>; Michael Hare
> <michael.h...@wisc.edu>; juniper-nsp@puck.nether.net
> Subject: Re: [j-nsp] improving global unicast convergence (with or without
> BGP-PIC)
> 
> On Tue, Apr 18, 2017 at 08:45:17PM +0100, Charlie Allom wrote:
> > On Tue, Apr 18, 2017 at 7:36 PM, Jared Mauch <ja...@puck.nether.net>
> wrote:
> >
> > You want to set indirect-next-hop in all use-cases.  This allows
> > > faster FIB convergence upon RIB events because all shared next-hops can
> be
> > > updated
> > > at once.
> > >
> > Is this the case for chassis MX104 and 80? Is your recommendation to run
> > with indirect-next-hop on them as well?
> >
> > ..or are there downsides on these smaller units?
> 
>       Yes, I would use this on all JunOS devices myself.
> 
>       - Jared
> 
> --
> Jared Mauch  | pgp key available via finger from ja...@puck.nether.net
> clue++;      | http://puck.nether.net/~jared/  My statements are only mine.
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