Do you ever lie awake at night thinking about all those little ideas churning around in your head? I am plagued with them almost every night. Some ideas are jotted down on a note, and others keep rattling around for years. Like a pestering earworm whose record keeps skipping over that same chorus over and over again in your head, listening to the song in its entirety is said to be the remedy. Chasing a persistent idea just might get it out of your head. Such was the case back in 2004 with the trailer hitch.
My home water for many decades was Oregon's Metolius River. Managed as a wild river the Metolius is for fly fishing only. In addition to being fly fishing only water, regulations prohibit the use of additional weight attached to the fly line or leader. This regulation posed a problem for me, as I discovered that the fish in the Metolius are primarily hiding in the deepest darkest pools and rarely out in the open riffles. Getting my patterns into the depths required copious amounts of weight tied into the fly.
The Metolius river has an abundance of golden stoneflies dwelling amongst the cobble and stones. Imitating these large nymphs provides the perfect substrate in which to tie anchor flies for use in the forbidden depths. A 4mm metal bead and 15 wraps of .20 weighted wire were sufficient to bounce bottom in 4 feet deep water. Life would be perfect if all I ever had to fish were this one pattern alone, a fly pattern I developed on the Metolius for getting deep the Stinger Stone.
The Stinger stone was my first pattern that employed the addition of a mono loop in the rear of the fly. In its first incarnation, I did not initially tie the fly as a stinger style pattern, just a bead-headed stonefly on a curved shank grub hook. I found the grub hook to be problematic in that the point was too long and had killed a few fish. Pinching the barbs also caused the droppers I used to slip off the bend of the hook. I had to remedy the hook problem, so I cut off the bend of the hook and added a short shanked egg hook instead. One thing led to another, and I further complicated the pattern for Umpqua Feather Merchants who picked it up for commercial production. After sales declined from a design we all considered a failure, I kept the mono loop and started using it in my other anchor patterns.
The trailer hitch has stuck around in the guiding boxes providing me with a tool in an arsenal of tactics to accomplish a task: fishing a multiple fly rig with a dropper affixed to another fly that will not slip off a barbless hook.
I have had no documented failures in the loop itself breaking or coming untied. The knots are no more vulnerable than any other knot you can use. I once had a commenter on a social media post about mono "cutting" mono. If that were the case, your poorly executed tippet repairs would all fail. No sir, you CAN use a mono loop and not have it fail if you practice good knot tying skills. The only issue that plagues me with the hitch is that I have to check it for fouling frequently.