Hi - Keep going with the hand feeding - it will pay off but it takes a while with young ones. And yes youngsters can be super fast but herding them into something is still less stressful than trying to catch them with hands. Some people use a small pet carrier to herd them into - I just prefer the cozy / sack method for mine.
I get my cozies from Cavy Couture (yes really, it is a whole new world of fleecy things

) - the sewing seems to withstand the liveliness of my boys! But there are lots of options eg small sellers on ebay etc.
Re handling approach - I prefer the slower way eg gaining their trust before too much stroking but yes there are different schools of thought. And all piggies are different - some grow up to be adults that don't like a lot of fussing and some are completely 'lap' pigs. So be guided in part by your own boys. If you get a cozy / sack thingy you may find that it is easier to first stroke them in it as they cant shoot off your knee as easily! Let us know how it goes.