Went in the park, played a bit of 3 on 3, then had a bunch of dunks at the 2.88m rim. Some pretty powerful ones, unexpectedly, given that I haven't jumped in months and I'm still just a tad over 90 kg. I've had a few dunks with a "walking" approach (walk and dunk) and the powerful ones were with a very easy run - there was some limited elastic contribution in the jump, I would say about 20% of the old days feeling. Vert was probably about 67 cm (whole hand over the 2.88m rim, meaning 20cm meaning 3.08m reach or so, meaning 3.08-2.41 reach = 67 cm).
Priority is losing weight, that's the limiting factor. Still pleasantly surprised by the jumps (was dressed in shorts and running shoes).