My home field is 50 x 400. Once upon a time, it was 25 x 250. 400ft is doable with nice runoffs. We have alot of different jets using the 400ft. boomers, kingcat, hotspot, mb339, and several others. Sometimes we don't runoff, sometimes we do. If we want a little more room, we go up the road to Bowling Green for 800ft. It makes for much less stress for landings. It's not a spot landing contest every flight. Alot less carnage. If you can get more length, I would.