First thing you need to do is definitely consolidate his equipment into speed and agility only. Lay off assigning points to SAs for a while and stick to the coverage tree (as I assuming that's the kind of guy you're building). Use your SPs for vision (and speed if it is close to the next cap). Don't assign any SPs to strength and tackling for the time being. When you can get back to it, tackling is the more important of the two.
Train up his jumping in combination with vision (until your SPs can bring it up to the cap) and then with stamina or tackling or even catching. Alternating training of jumping and confidence (whichever is lower at the time) can work as you'll still have training combos you can use.
If you want some more SAs the best way to get them for now is with advanced equipment.