Trawling through past threads I was looking for thoughts and ideas on hook lengths. I've had success over the years using 6 to 12in hook lengths but then there is this nagging doubt that opportunities could have been missed by fish spooking through line entry detection. In the past I have watched barbel wolfing down all my droppered bait but completely ignoring the hook bait. To resolve this I opted for using a tungsten putty back lead which I felt OK with providing I was fishing off my rod top. I would literally lower my hook length into the desired spot and then walk back up stream to my sitting position confident that my back lead arrangement was keeping my mainline out of the way. I should add that I never over tightened my line in case I would lift the tungsten putty off the deck and have it oscillating in the flow between the river bed and surface completely defeating its purpose, and quite probably creating a greater spook issue.
The above arrangement over distance casts gave me less confidence as I couldn't control what was going on with the back lead, further more having two weights, the back lead and ledger itself tended to cause issues with casting as the two weights would try to compete with each other mid air which would hit the water first.(it's to do with physics I gather). The whole casting operation left me feeling uncomfortable regards tangling let alone what was happening under the water. Casting across the river with this arrangement also raised doubts about the purpose of the back lead. Was it being dragged downstream below the ledger and hook length? Was it laying over or caught up in weed was it, as mentioned earlier being suspended mid water...? I concluded that back leading had its purpose close to the bank where close control downstream ledgering was possible.
How then to prevent line entry spooking when fishing over a greater distance? I read a certain profile angler recommended 3 foot hook lengths as a way to keep line entry away from the hook bait. It seemed a long length to me from what I was accustomed to. I could see the merit in it if, as with the back leaded tungsten the setup could be controlled with everything in line downstream from the rod tip. Fishing some distance across river once again made me question this approach, once the tackle enters the water how can I be sure the 3ft length has successfully unravelled and is lying in a straight line from hook to ledger? Its the not knowing that effects ones confidence. Was my hook bait caught up in some weed or other obstacle adjacent to my ledger rendering bight detection ineffective? Also the greater the hook length the more risk there is of tangling with the ledger mid air or in the initial tumbling through the water before arriving at the river bed. If I were to lift the rod to assist straightening out perhaps the bait would either come off or inadvertently the hook could be snagged. Any thoughts on this please.