First kayak, first time taking it out.

Finally got to take my new and first kayak out the other night after work. A Pelican catch classic 100. My couple questions, I never felt tippy or uncomfortable but I couldn’t see myself turning around to utilize a crate behind me or standing up to fish. Is that just something that comes with more time on the water and getting more comfortable? I’m 5’9 around 240 and the kayak seemed to ride and paddle great for me, especially considering I’ve only gone once before. I’m planning on taking it to camp with me in a couple weeks and running it empty with just my paddle and jacket to test some flips and standing up. Appreciate any info, as a lifelong fisherman it feels good to finally be joining the club.