Originally Posted by MeryaTeeBars
It's definitely possible to collect at the trot! There are multiple ways to get your horse to collect and everyone has their own preference. Have you had experience getting a horse to collect before? When I taught my horse to collect, I see-sawed the reins until she would drop her head, then release as a reward. Once she brought her head back up, the see-sawing would start again. This process can take MONTHS to finally master, since collection is all about muscle. It will be hard at first to get your horse to collect, and until they gain that muscle you will need to tell them quite often.
If your horse is just learning, take a few days just to teach them to drop their head, then move in to actually having him tuck his nose in. I like to practice this for about 10 minutes each time I ride when just starting, but remember to keep consistent!
None of the above has anything to do with collection.
All you are doing is beating the head down and dragging around the forehand.
Collection (the real kind, not the fake headset) takes years to teach and achieve and has absolutely nothing to do with where the head or neck are.
If you care to learn what it really is, read this: http://www.equisearch.com/horses_rid...ection_061810/
Endiku is correct in that the remedy for the rough, disconnected trot is connecting the back end to the front. It is done by driving the horse forward into the hand. And like Endiku also said, it is not something that can be explained on the internet.