I don't believe in trimming weedguards, or in modifying them. Most of the time what you end up with is a weedguard that no longer deflects cover and a guard that takes more effort to bend. I prefer a much longer weed guard, and leave it as is, NorthStar jigs are built that way.
I don't use braid, I have no reason to, the drawbacks are greater than the advantages. I have no issues setting the hook with fluorocarbon, none at all.
In most cases, with a jig hookset, people are getting far too short a sweep to effectively set the hook. When I'm fishing a 7-2 rod, as an example, I will reel down until there is zero slack, and then move as much of that line as I can by moving my rod to the side; if that means I'm turning 90+ degrees to the angle the fish is at, that's what I'm doing. I RARELY set the hook with a jig in vertical fashion, it's too hard to move enough line to do it effectively.
The most basic thing that I've not seen menitoned here: make sure your hooks are sticky sharp. They should come near to grabbing you and drawing blood just from it resting on your thumb. If it doesn't catch on your thumbnail when you pull it across, it isn't sharp.
High speed reels are a very good idea, but they're not always the answer. I have caught many hundreds of swimjig fish on a 3.8:1 reel when they want it moved dead slow, and I still have had zero issue with dropping hooks.
Sure, it happens that I'll lose a fish from time to time, but it is so incredibly rare that I don't really pay much heed to it. I chalk it up as being on the water. Case in point: This past weekend, I was catching fish on one of five Northstar Jigs during pre-fishing and during the tournament. It was like the fish would eat one, turn off and hit another color consistently. What made it even worse is that they were wanting different rates of fall on different structure, but they wouldn't hit anything but a jig. I had five jig rods out and rigged with everything from a 1/4 ounce Alien, to a 5/16 finesse, to a 1 ounce flip/swim. I lost one fish out of about 125 in roughly 24 hours fishing time. That's a PRETTY darned good average.
Check your hooks, make sure they're sharp. Sweep that set to move as much line as possible. Those two things will make giant differences for your jig fishing.