Hi there
We're not much use re the jumping up thing as our cocker is allowed on the sofa for cuddles. We do find ours is more prone to the 'zoomies' when she is wet though, so we do dry her thoroughly after a wet walk.
Regarding the season thing- just wanted to say, we don't keep ours under house arrest at all during this time. We bought a really comfy soft harness (doodlebone) and a long line.
At the first sign of bleeding, she wears this combo on walks. It means that she can still get out and about and when you can see noones about, you can drop the line so she can have a run about with a ball etc.
It's the latter part of the season that's the most dangerous because the female is also interested ( you'll know because she may stand for other dogs, bum In the air, tail to one side!) So during the latter part we keep hold of the other end of the line at all times. Week/ten days?
The reality of it is that half the dogs you might meet are female. Of the remaining males, half of them are castrated, and half of those aren't interested, so the final number of dogs you might meet that pose an actual risk is very small and your dog is on a line anyway.
We have done this for two seasons so far and found it to be perfectly manageable.
Hope that helps.