On Wed, 5 Dec 2018 16:27:05 +0000
newshound wrote:

The livery yard where I keep my horse has a large quad which will
happily tow a trailer containing a few hundred kg. I have driven it
but never feel completely safe: it has a bizarre thumb-trigger
throttle which is not very easy to control, I can't understand why
they moved to these instead of a twist grip.

This is a d-i-y group. Consider changing it to a proper control?

You know it makes sense...

--
Davey.