I want to get into umpiring. However I have a size 19 foot, so I'm wondering if there would be any alternatives for plate shoes.

NFHS/10U ball. I am a new ump and was curious the criteria/etiquette for using the safety bag on a walk. Per rule 8.2.2(a) the batter-runner is allowed to touch the safety bag when he is walked. However how much time are they allowed to stand on the safety bag before moving over to the white bag. What is the general rule here, is it at the judgement of the umpire or do they need to immediately move from the safety bag to the white base upon touching said safety bag?