Im using the trinity speed feed from LPS and once the lid is off it just pushes on to the top, but still firm enough not to come off when playing!
One bonus is you can take the speed feed off in the safe zone to clean or refill ya loader by hand without having to use another pot.
One of the best ones ive seen so far! And no im not sponsored by them before you ask just a good piece of kit thats all LOL.