Skatepark safety

I've always bladed, but started derby this year and absolutely love it. I feel really great in my prostar bonts, switched out for hard wheels and keep my trucks real loose for practice. I prefer flexibility over stability. (However, I am light contact and am kinda bigger so I don't see myself really being jammer, and I might prefer stability more in the future, but that's just a truck tighten away right?)

Anyways, I've been having so much fun at the skatepark. I've gone down the biggest straight ramps for all the parks near me so next I've been thinking about vert ramps but I'm a little scared for my ankles. The prostars have no ankle support and I dont want to hurt myself. I have a pair of Reidell crew but I kinda have wide feet and I don't know if it's worth selling them or trying to break them in. I tried riding around in them twice but they made my feet numb and I'm already used to no heel skates.

I'd like to get slide blocks in the not too distant future as well. I'm curious as to having wider trucks and the chaya karma already have wide trucks and slide blocks built in, and they look wide foot friendly.

I don't wanna hurt myself but damn I really want to start goofing around more seriously at the skatepark. What's the best ways to keep myself safe?

Any advice?