So I did not manage to completely avoid a huge pothole and my rear tire dipped into it.

About 30 seconds later I felt something funny and knew that my back wheel had completely lost pressure.

I tried putting in some Caffe Latex and I spun the wheel for a good minute to let things settle but inflating the tire didn't work ... it just kept on leaking.

I also have the problem of not being able to pull the tires and tubes off the rim.

So should I go tubeless? Doesn't that just involve taping up the inner part of the wheel and installing a latex tube with sealant?

Or should I use puncture-resistant butyl tubes?

Or should I get butyl tubes with removable valve cores and put in some other sealant that has been tested to work well with butyl tube?

Or should I just learn how to freaking replace tubes? I have a set of new tire levers on the way. I think it's my current levers holding me back. I deflate the tire by pressing on it; I pinch the tire around its circumference to remove the bead from the wheel; I put one tire iron under the bead and hook it to a spoke ... and then when I try sticking the second tire iron underneath it WON'T fit. I also start on the side opposite the Presta valve and also loosen the ring nut ... and I have successfully dismounted tires from cheap BSOs before. Could it be a combination of a) chunky tire levers and b) looser tires on BSOs - i.e. no kevlar bead or kevlar belt? My current tires are "120 TPI" and have Kevlar all-round ... and that probably isn't helping me ... as Kevlar stretches less than 1% of its original length, unlike other materials (such as nylon: 30%).

Sorry if it sounds like I'm making excuses or ranting but this has been my 4th pinch flat in recent history and I'm tired of not having a solution to this problem ... other than going into the LBS (again!!) and asking them to swap tubes (again!!)