| One thing I would suggest is that perhaps you don't need your monitor near to you for the entire duration of your working day. I'm assuming that if you're testing, you're either going for a meal (ie. your break) or you're expecting a hypo, in which case you'd be leaving the vicinity of the ride anyway for safety reasons. So perhaps there may be somewhere nearby where you can leave the monitor and strips in a less toasty environment?
As for avoiding going low in the heat, the problem comes from the heat dilating your blood vessels to the surface of your skin, meaning insulin is absorbed more quickly. Since you're not on insulin I'd imagine that the heat will have less of a pronounced effect on you than you might think. My advice here would be to have either glucose tabs or even a bottle of regular soft drink to hand, and ensure that you know your hypo warning signs. Some people with hypos can 'feel' them coming for some time before they actually happen - if this is the case with you, use your body's natural detection abilities to prepare!  | 
