Why not level your garage floor and get trolley stand so you can rotate it once in, My neighbour does exactly that.
I push my GSA into the garage and reverse it out but I never move the bike unless I am sitting on it much less chance of dropping it.
However I have dropped it on a number of occasions but I have never considered changing it because of that.
Ive dropped mine a few times and suggest at least gaff taping some split car heater hose around the crash bars. It wont save anything in a proper crash but it will protect the metal in a car park falling over.
I found out the hard way that pushing the bike forwards holding the handlebars (my usual way in the past) is risky to say the least. You can't see what the wheels might bump into and if the bike is leaning just a little away from you it can go down like a lead brick and catapult you with it.
I find the safest and easiest is to push the bike backwards with the side stand down. Left hand on LH handlebar and right hand on top box or pillion handle. I keep it leaving slightly towards me. If a wheel bumps anything the slight lean will make the bike drop towards me. In the worst case with brick end or small child (joke) it will drop onto the side stand. If there is any sort of slope I put it into gear and use the clutch as a brake.
I almost never paddle the bike backwards. (1) because my legs are barely long enough so I can't make much progress and (2) because if it falls I risk getting trapped. One exception is where there is a gentle downslope so the bike can roll easily and all I have to do is maintain balance.
In the garage the small stand trolleys are handy because the bike is so well balanced, but the longer trays that carry both wheels are 100% better. The whole rig spins around effortlessly.
Where there is no space to spin the bike inside the garage, do the turn outside or just use my pushing backwards method and drive it the other way.
My recent bikes have been MZ 250 (almost downhill pushbike weight), Yamaha Diversion 600 (<200kg and low so no big deal). Suzuki GT750A (scary to drop a classic like that), Diversion 900 250kg (quite low but taught me how to manhandle heavy bikes). Now the GSA heavy and tall but much more stable at low speed than any of the others.