I recommend to remove the spare all together and carry on board air and a plug kit. AAA would be recommended for those not able to plug a tire and fill it up with air. Over sized tire carriers are more trouble than they are worth.
Dirtman asks the right question here. I lug around a 37" spare that I absolutely cannot lift by myself onto the carrier. I have OBA and two plug kit sets on board as well. I figure I could get rid of over 200 lbs off the rear suspension by ditching the SoB spare, the tire carrier and the bumper. I once did a trail with a guy who carried no spare and slashed the sidewall on a BFG MT. We filled the cut with about a dozen plugs packed in tight. We waited a bit for the plug glue to set up and filled the tire. Guy drove over 150 miles home with no issues. So......
'09 JKRU. 4" Teraflex long arm, Teraflex R44 housing, Teraflex / Fox Resis, Poly Performance skids, Nemesis Billy Rockers, Nemesis flares, 37" ATZ P3s on 17" 5x5.5" Trailready HDs, Spyntec hubs, Teraflex BBK, Mopar BBK master/booster, Superior front & Alloy USA rear axle shafts, CTMs, Reids, Synergy drag link & tie rod, WTOR hydro-boosted steering, 5.38s, TF Dual Rate front bar, TF bumpers, Warn Powerplant, Tom Woods shafts, AA xfer case cable, Kilby canister relo, RH4x4 cage.