Tong feeding is something that you could achieve over time but it's hard to pinpoint a timeline for it. Rope fish can be aggressive with weaker or injured fish but are generally very passive and peaceful. My point, manual feeding is based almost entirely on the comfort level of your fish. Aggressive or selfish eaters definitely hurt that ability. I have had a rope for about a year now; he's healthy and happy. A reclusive fish at fish that curled his body into any corner or hiding place he could find, I rarely witnessed him eat. I feel like most things you read state that the fish remains this way unless put into a tank alone; however, mine swims actively from top to bottom of the tank with only short stints of rest. He even feeds amongst the community rather than waiting for the pieces that hit the bottom. Unfortunately I have never owned anglefish so I can't claim great knowledge of their personalities, but I can't possibly see them being any more aggressive than 5 bala sharks, a red tail shark, iridescent, angelica cat, black ghost knife, and 3 crayfish..... So here are my suggestions to start
*Create some form of current (using a mix of bubble wands and water pouring out of the filters). This makes the food swirl and sink to the bottom all over the tank inevitably.
*They love frozen blood worms; put a cube or 2 into a cup and stir it into a chum. Then pour it across the surface of the water. They learn very quickly what feeding time is and will emerge from hiding when the lid opens.
*Use algae wafers or pellet foods; they sink and rope fish with shove anything they can fit into their mouths (break algae wafers in half
As far as the lid goes; a normal tank lid should be sufficient. I know they are notorious leapers but I have never had the problem. I have a 75g myself so with proper decor and tank mates I doubt you'll even have an issue. Just be sure to only make small cut into the lid where the filters will be attached.