Hiya to the forum.
How big is your legs, sounds odd but the hoops are one size fits all so you may have lots of room !?
If you push your knee pads in ( I hope you have pads ) and still find it loose you culd try wrapping a tea-cloth around the foam to bulk it up ( like some have ).
There are also a PINHEAD strap that could be helpful ( Just do a quick search on this forum ).
Just found this for you
http://www.projumpforum.co.uk/index.php?topic=1395.0One important thing !?
Bocking in doors isn't the good idea, your more likely fall on the edge of a coffie table the the sofa
If you know what your doing then bocking in door is .... still not a good idea