I can imagine how frustarting that can be..I've had a similar experience.. it seems some days i have almost no control, barely ever make it to the toilet, and some days i have only used one or two diapers the whole day. its all part and parcel of the the whole neurgenic bladder thing.. hang in there.. and just trust your protection.. I'm curious.. can you feel a full bladder, or feel it coming on wehn youre about to leak...sometimes I do, sometimes I don't..sometimes i feel when my bladder's full and can make it to the toilet..sometimes i can't..its a real crapshoot.. sometimes i appreciate the need.. and can get up and go.. no problems..other times im getting ready to pee..and before I can take the diaper off.. the floodgates open.. sometimes i can clench it and stop it..sometimes I can't.. sometimes when I clench the flow..it only lasts a few seconds..then the flow starts again.. i think my issues stem from combined weak sphincter muscles.. and detrusor spasms..
Just hang in there.. things will get better

Peace out!
Rob