Well, you nailed it with the 'create bigger ones', which is what I'm going to try to do.
The problem isn't that he has an 'effective' guard. In a way, I guess he does, but it's really that, at his age/experience combination, he doesn't move quickly so he tends not to move at all. Thus, feint's and checks don't work too well because he doesn't bite on them. (I've use the low-high combination effetively against other opponents who would block the first kick, or try to, and open up for the seconf kick) Anything into the target area, he just blocks/absorbs in his arms, anything outside he doesn't really go for (remember, we are still using light-contact and wearing forearm and shin guards so he doesn't really pay a penalty for just standing there, otherwise I would just blast into his foreams with my shins and heels to...educate him...frustrating for me and not good for him in the long run). My initial strategy was to use a lot of double kicks, feints, switch stances, etc..deception and redirection. Like I said, he doesn't naturally react fast enough for this to really work, which is why I've been working on a new strategy
1) Aim - his arms can't really cover the whole target area so I need to pick my targets more carefully and work my repetoire of stricks in for penetration (this, coupled with the realization I need to keep in mind that the whole target area is much larger than I usually think about..he can't guard the floating ribs/kidneys *and* the solar plexus *and*..etc...so I need to think about where I'm striking to)
2) Displacement/Balance - If I can get him off balance, he should open up naturally as he works to regain balance. So I'm thinking 'moving' kicks like spinning back kicks, side kicks, or pushkicks, to get him off balance, followed by a quick roundhouse or other kick to 'score'.
3) Counters-strikes - this would really be a general strategy (remember, I'm new at this so I'm still learning/developing tactics) Just in thinking about opeing things up, today I practiced a lot on using slide-steps as evasions with a follow up sidekick or roundhouse counter-attack. This is probably good strategy anyway, but I haven't been using it much. I know this guy tends to open his defense when he attacks so as I've been thinking about attacking him, I've been thinking about using more evade-and-strike approaches...and practicing my footwork a lot more.
Anyway, thanks for all the feedback and advice. Hopefully I can apply what I can and remember the rest for the future. I *should* see him tomorow night so I'll let you know how it goes