Communication is key. Roxy G is excellent with edging. We use a green light yellow and red. Yellow is an indication that I won’t last much longer so you better change pace or grip. Red is stop now or I will come. This system lets us edge for 6-7 right to the edge or an O times over 40 mins. Those who talk about hours of edging are not really edging. You just can endure a HJ or BJ for more than 40 mins without getting desensitized or coming. Changing positions and pace and grip are essential. Time with the taint and balls also essential. Good coconut oil and alternating between hand and mouth is also ideal. I love it