Hook em up the top end and use a floor jack to get em close. Then use some if that upper body strength and get the lower mount bolt in.
It sucks to do them that way but it works. The rears are on an angle so that sucks too.
Buy some beer and get some friends over and do a little challenge works every time.
89 2.5 TBI, 4" RC lift, 1" Booms, SYE, Adams Driveshafts front and rear, Ford 8.8 with 4:88s, BFG 33X12.50X15, and a ton of other stuff.
AF Jeep Club Tail Number 184