how tight is to tight

i am 13 and i have some m size boots on my wakeboard but they are as big as they can go.
When im wakeboard for about 20 mins or so i I get the impression of the boot on my foot. I was wondering if anybody can tell me if this is to tight and i should get some bigger boots.
Also it is pretty easy for me to get them on but it takes me about 5 mins to get them off. I was also wondering if you have anytips on getting them off.

thanks alot
peace

wow dude...20 minutes...no wonder you get imprints...I only ride out there for like 10 or 15, then someone else goes...you last longer...to get them off, 1 let go of the handle, and then when you get slow enough, put your arms in front of your face, and then face plant, thats what I always do...it's so much quicker than anything else...but if you don't like that just squirt some slime down there and that should help too.

thanks il try that.

o and the whole run is 20 mins...including times were if fallen and im in the water.
and at my cabin there is no on else there who wakeboards so i just go for long runs