Slide on nylon strings ,in my experience doesn't really work that well on acoustic. You either need to go loud (amplify ) and /or preferably use steel strings, which aren't uke friendly, unless purpose built like the Risa epiphoneor ...so you may want to look at a "Diddlybow" ...or a DAD tuned three string cigar box guitbow.......you can tune to other keys as well.
Having said that ,try a glass slide on your monkeypod electro, you may want to tune to open G GDGB and work on the chords ...open being G..2nd Fret A
4th B ,5th C ,7th D ,9th E ,10th F ,and then 12th G again.
The ones in between being the sharps and flats of course !!