teK--
Eats Squid
Best trailers I've used are the ones at Rotorua. Front wheel hold and with a bungee/clip system that is super easy and quick to secure.I use an inner road tube cut and slid onto the crank (then put the pedal back on). Then a couple of layers of gorilla tape, its never worn through, even at Apollo bay, which rattles the shit out of the bikes.
Also, fuck crank holder trailers, it is a shit low effort solution, that adds pointless damage to ones bike.
At least some operators like YYMTB have installed pvc inserts to their crank holders which makes them a lot better. The ones who still run bare steel are slack.